The 5 Best Hot Tub Booster Seats of 2025 (Tested & Reviewed)

There’s nothing quite like sinking into a hot tub after a long day. The warm water, the powerful jets—it’s the perfect recipe for relaxation. But what happens when the water is just a little too deep? Instead of relaxing, you’re craning your neck to stay above water, or your kids can’t safely enjoy the soak. This small annoyance can ruin the entire experience. The solution is simple and surprisingly affordable: a quality hot tub booster seat.

But not all booster seats are created equal. Some float away the second you stand up, others feel like you’re sitting on a rock, and some can even damage your hot tub’s surface. To cut through the noise, we’ve spent countless hours submerged, testing and analyzing the top models on the U.S. market. This guide will walk you through our top 5 picks, our rigorous testing methodology, and everything you need to know to choose the perfect seat to elevate your spa experience—literally.

Why a Booster Seat is a Non-Negotiable Hot Tub Accessory

You might think a booster seat is a minor accessory, but for many, it’s the key to unlocking the full potential of their hot tub. Here’s why it’s more than just a simple cushion:

• Enhanced Comfort for All Heights: For adults under 5’7″, many standard hot tub seats are simply too deep. A booster seat provides that crucial 4-6 inches of lift, allowing you to recline comfortably with your head and shoulders above the waterline without straining.
• Child Safety is Paramount: A hot tub can be a fantastic family activity, but safety comes first. A stable booster seat ensures children can sit with their heads well clear of the water, allowing them to enjoy the bubbles safely under close adult supervision.
• Targeted Hydrotherapy: Are the back jets hitting you in the wrong spot? A booster seat allows you to reposition your body, directing the hydrotherapy jets precisely where you need them most for maximum muscle relief.
• Creating a “Cool-Down” Spot: Sometimes the water can feel a little too intense. A booster seat lets you sit higher, keeping more of your torso out of the water for a gentle cool-down without having to exit the tub completely. This is especially useful during soaks in an inflatable hot tub in winter, where getting out is a shock to the system!

How We Tested: Our Hands-On Review Process

To provide you with trustworthy recommendations, we developed a rigorous, real-world testing methodology. We purchased each of these seats ourselves and tested them in two different environments: a standard acrylic 4-person hot tub and a popular inflatable model, the Coleman SaluSpa, to assess performance on different surfaces. Here are the key criteria we evaluated:

Comfort & Ergonomics (40% of score)

We conducted multiple 30-minute and 60-minute soak sessions on each seat. We noted whether the design was flat or contoured, if the firmness was comfortable, and if there were any pressure points. Did it feel like a natural part of the spa, or an awkward afterthought?

Stability & Weight (30% of score)

This is critical. A floating cushion is useless. We filled each water-fillable seat to its recommended capacity and tested its tendency to float. We shifted our weight, stood up, and sat back down to see how well it stayed in place. For seats with suction cups, we tested them on the smooth acrylic surface of our traditional tub.

Durability & Materials (20% of score)

We inspected each seat for quality of construction. We examined the seams, the quality of the vinyl, and the durability of the fill nozzle. The materials need to withstand high temperatures and a constant barrage of spa chemicals. We even consulted our guides on hot tub water testing to ensure our water chemistry was balanced, creating a realistic, challenging environment for the materials.

Ease of Use & Maintenance (10% of score)

How simple was the initial setup? Was filling the seat with a hose easy and mess-free? How difficult was it to drain and clean? A great accessory shouldn’t add to your hot tub maintenance chores.

After compiling all our notes and scores, we ranked the products. The results are a definitive guide to the best seats on the market today.

The 5 Best Hot Tub Booster Seats of 2025

1. Badesofa Spa Pillow Booster Seat

   🏆 Best Overall

   The German-engineered Badesofa Spa Pillow isn’t just a booster seat; it’s a complete comfort upgrade for your hot tub. From the moment you unbox it, you can feel the quality. Instead of the typical thin vinyl, the Badesofa uses a thick, leather-like material that feels incredibly premium and durable. This seat consistently came out on top across all our testing categories, making it our definitive choice for the Best Overall hot tub booster seat.

   What truly sets it apart is the internal structure. It’s not just an empty sack you fill with water. It has four weighted chambers that you fill with water, which makes it exceptionally stable and heavy once submerged. In our stability tests, it was a rock. We could stand up and sit down without it shifting an inch, even on the slightly textured floor of our acrylic spa. The comfort is sublime—it strikes the perfect balance between supportive firmness and gentle cushioning. The material warms to the water temperature quickly and feels soft against the skin. It’s the closest you can get to having a custom-molded seat in your tub.

   

   Badesofa Spa Pillow Booster Seat

   A premium, German-engineered seat offering unmatched stability, superior comfort, and durable, high-quality materials. An investment in your relaxation.

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   Pros

   • Exceptional stability from weighted chambers
   • Premium, leather-like material feels fantastic
   • Perfect balance of comfort and support
   • Extremely durable construction
   • Easy to fill and stays put reliably

   Cons

   • Premium price point—it’s an investment
   • Heavier than other seats when filled

2. Kenley Hot Tub Booster Seat Cushion

   💆‍♀️ Best for Comfort

   If your primary goal is to transform your standard hot tub seat into a luxurious, ergonomic throne, the Kenley Hot Tub Booster Seat is your answer. Unlike flat, single-cushion designs, the Kenley features a unique, contoured shape with four distinct cushioned sections. This design is brilliant for providing lumbar support and cradling you in a way that feels incredibly secure and comfortable, especially during long soaks.

   During our 60-minute comfort test, this was the clear winner. The design relieves pressure points and the soft-yet-supportive filling makes you feel like you’re floating. It’s filled with water, and the four suction cups on the bottom provided a surprisingly strong grip on our acrylic tub’s smooth surface. A word of caution: suction cups are largely ineffective in most inflatable hot tubs like the Bestway SaluSpa Miami due to the slightly textured vinyl. However, the seat is still heavy enough when filled to stay put reasonably well, but its main strength is in traditional spas. If you suffer from back pain or just want the most spa-like seating experience, the Kenley is worth every penny.

   

   Kenley Hot Tub Booster Seat Cushion

   With its unique contoured design and powerful suction cups, this seat provides incredible ergonomic support, making it the top choice for pure comfort.

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   Pros

   • Superb ergonomic and lumbar support
   • Contoured design is exceptionally comfortable
   • Strong suction cups for acrylic spas
   • Adjustable firmness by changing water level

   Cons

   • Suction cups are ineffective on textured/inflatable tubs
   • Can be slightly buoyant if not completely filled

3. Bluewater Spa and Hot Tub Booster Seat

   💰 Best Budget Pick

   Looking for a simple, effective boost without all the bells and whistles? The Bluewater Booster Seat is a testament to the fact that you don’t need to spend a lot to solve the problem of a too-deep hot tub. This is a no-frills, straightforward product that delivers on its core promise at a price that’s hard to beat. It’s the perfect choice for occasional use, for outfitting a tub with multiple seats, or for anyone new to hot tub accessories.

   It’s a classic water-fillable design made from durable, heat-resistant vinyl. The fill nozzle is standard and easy to use with a garden hose. When filled completely, it’s surprisingly heavy and stable, performing well in our “stay-put” test in both our acrylic and inflatable spas. The comfort is best described as “functional”—it’s a firm, flat cushion that gives you the height you need. It lacks the ergonomic contouring of the Kenley or the premium feel of the Badesofa, but it absolutely gets the job done. For the price, its durability and stability are impressive, making it our confident pick for the best budget option. It proves that even for a small investment, you can significantly improve your spa experience.

   

   Bluewater Spa and Hot Tub Booster Seat

   This affordable and reliable seat provides the essential height boost you need with good stability and durable materials. The best value on the market.

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   Pros

   • Excellent value for the price
   • Durable, heavy-duty vinyl construction
   • Good weight and stability when properly filled
   • Simple and easy to use

   Cons

   • Firm and basic comfort, not contoured
   • Can be tricky to fill completely without air pockets

4. LIFE Spa & Hot Tub Seat

   💪 Most Heavy-Duty & Stable

   For those who prioritize stability above all else, the LIFE Spa Seat is an absolute tank. This seat is noticeably heavier and constructed from a thicker gauge of vinyl than most of its competitors. It’s designed for high-traffic hot tubs or for users who simply don’t want their seat to move, ever. Its simple, robust design inspires confidence the moment you hold it.

   The secret to its stability is its sheer capacity and the recommendation to fill it not just with water, but with pea gravel or marbles for maximum weight. We filled ours with water for testing consistency, and it was already the heaviest and most planted of the bunch. With gravel, it would be immovable. The trade-off for this rock-solid stability is comfort. It is very firm. While not uncomfortable, it lacks the cushioning of our top picks. However, if you have a bustling family hot tub or you’re a larger individual who wants a completely secure and stable base, the LIFE Spa Seat is the most durable and reliable option we tested. It’s built to last for years, a true workhorse of a booster seat.

   

   LIFE Spa & Hot Tub Seat

   Built with extra-thick vinyl and designed for maximum weight, this seat is the undisputed champion of stability. Perfect for active users and busy hot tubs.

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   Pros

   • Unmatched stability and weight
   • Extremely thick and durable vinyl
   • Can be filled with gravel for maximum ballast
   • Large, comfortable seating area

   Cons

   • Very firm, less cushioning than others
   • Can be very heavy to move once filled

5. PureSpa Hot Tub Seat by Intex

   inflatable hot tub 🥇 Best for Inflatable Hot Tubs

   Owners of inflatable hot tubs have a unique consideration: protecting the vinyl liner of their spa. A hard, abrasive booster seat could potentially cause damage. That’s why the official Intex PureSpa Hot Tub Seat is our top recommendation for this category. Designed by a leading manufacturer of inflatable spas, it’s engineered to be the perfect companion for non-acrylic tubs.

   The seat has two key features that make it ideal. First, it’s made of a soft but durable material that’s gentle on the tub floor. Second, it has slip-resistant feet instead of suction cups, which provide grip without creating the intense pressure points that could harm a liner. The seat is also unique in that it’s a hard, weighted plastic shell that you can adjust to two different heights: 3 inches or 5.8 inches. This versatility is fantastic. In our testing in a popular inflatable spa, it was very stable and didn’t move around. While it’s the firmest seat on our list (it’s hard plastic, after all), the peace of mind it provides for inflatable spa owners is invaluable. If you’re looking for the right accessory after your inflatable hot tub setup, this is a must-have.

   

   PureSpa Hot Tub Seat by Intex

   Designed specifically to be safe for vinyl liners, this adjustable-height seat offers excellent stability and peace of mind for inflatable hot tub owners.

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   Pros

   • Designed to be safe for inflatable tub liners
   • Two adjustable height settings
   • Very stable and slip-resistant
   • Durable, rigid construction

   Cons

   • Hard plastic surface is not cushioned
   • Not as comfortable for long soaks

Buyer’s Guide: How to Choose the Perfect Hot Tub Booster Seat

Feeling overwhelmed by the options? Don’t be. Use this comprehensive guide to narrow down the features that matter most to you and your spa.

1. Type of Hot Tub: Acrylic vs. Inflatable

This is the most important starting point.

• For standard acrylic tubs: You can use any type of booster seat. Models with suction cups, like the Kenley, will work best on smooth, non-textured surfaces, providing an extra layer of stability.
• For inflatable hot tubs: Prioritize seats with soft materials and no harsh edges. Avoid aggressive suction cups. The official Intex seat is the safest bet, but well-made vinyl seats like the Badesofa and Bluewater are also excellent choices. Finding what is the best blow up hot tub is only half the battle; accessorizing it properly is key.

2. Fill Method: Water vs. Solid Weight

How the seat gets its weight determines its characteristics.

• Water-Filled: This is the most common type. You fill it with your garden hose. Pros: Adjustable firmness/weight, conforms nicely to the tub floor, easy to empty for storage. Cons: Can be buoyant if not filled properly, potential for air pockets.
• Solid/Weighted: This includes hard plastic seats like the Intex model or seats you can fill with pea gravel or sand. Pros: Extremely stable, no chance of floating. Cons: Can be less comfortable, heavy to move, and you must ensure fill material (like gravel) is clean to avoid contaminating your water. You’ll want to have one of the best hot tub vacuums on hand if you ever have a spill.

3. Material and Durability

A hot tub is a harsh environment. Look for seats made from heavy-duty, heat-resistant vinyl. This material is designed to withstand high temperatures and chemicals like chlorine or bromine without fading or becoming brittle. Check customer reviews for mentions of seam strength, as this is the most common failure point.

4. Suction Cups: Friend or Foe?

Suction cups can be fantastic for locking a seat in place, but only on perfectly smooth, glossy acrylic surfaces. On any surface with even a slight texture, or on the vinyl of an inflatable tub, they are useless and can sometimes make the seat less stable. Don’t make them a primary decision factor unless you have the right type of tub.

5. Comfort and Size

Think about how much of a boost you really need. Most seats provide between 3 to 6 inches of lift. For comfort, consider if you prefer a flat surface or a contoured one that offers more back support. If possible, choose a seat with a wide base for better stability and a more comfortable seating area, especially if you’re outfitting a spacious 4-person inflatable hot tub.

6. Maintenance and Cleaning

Your booster seat is another surface that needs to be kept clean to prevent biofilm and algae growth. Choose a seat with a smooth surface that’s easy to wipe down. Periodically, you should empty it and clean it thoroughly as part of your regular routine. This is just as important as knowing how to clean an inflatable hot tub itself. A clean seat means clean water, which you can verify with one of the best digital hot tub water testers.

Frequently Asked Questions (FAQ)