










⚡ Elevate your fitness game—balance, strength, and mobility in one sleek trainer!
The BOSU Sport Balance Trainer (50cm) is a compact, durable balance dome designed for versatile workouts that enhance core strength, flexibility, and endurance. Supporting up to 350 lbs, it’s perfect for fitness enthusiasts and rehabilitation alike, with a travel-friendly size that fits any lifestyle.





| ASIN | B00MP7V3OS |
| Age Range (Description) | Adult |
| Best Sellers Rank | #20,832 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #124 in Balance Boards (Sports & Outdoors) |
| Brand | BOSU |
| Brand Name | BOSU |
| Color | Blue/Neon |
| Customer Reviews | 4.2 4.2 out of 5 stars (2,221) |
| Date First Available | August 13, 2014 |
| Global Trade Identification Number | 00033149305361 |
| Included Components | BOSU Sport Balance Trainer, 50cm, Blue |
| Item Dimensions LxWxH | 22 x 21 x 7 inches |
| Item Package Dimensions L x W x H | 22.68 x 21.73 x 3.86 inches |
| Manufacturer | Ball, Bounce and Sport, Inc. |
| Material | Polyvinyl Chloride (PVC) |
| Maximum Weight Recommendation | 350 Pounds |
| Model Name | BOSU® Sport Balance Trainer (Travel Size), 50cm, Blue |
| Model Year | 2016 |
| Package Weight | 4.91 Kilograms |
| Part Number | BOSUSB |
| Product Dimensions | 22"L x 21"W x 7"H |
| Size | 50cm |
| Skill Level | All |
| Sport Type | Exercise & Fitness |
| Style | Music |
| Suggested Users | Unisex-Adult |
| UPC | 643989104828 796433145882 033149305361 |
| Warranty Description | 90 days |
A**R
Great for a small space; still sturdy and secure
Very happy with this smaller version of the Bosu Ball so far! It's perfect for use in my smaller office space where I work out each morning. I highly recommend if you have a small area, as the size provides better maneuverability. The box was a bit damaged when it arrived but the ball is fine. Note that when you first get it you may need to pump it up a few times as the ball stretches (at least, I have done it twice and likely need to once more). The ball isn't losing air it's just adjusting. :)
A**3
Great quality
Great size for my daughter who is 11. Very well made and very sturdy.
D**A
Don’t expect overnight
Awesome for all kinds of different workouts, and physical therapy moves . Expensive but worth the wait , will take a few weeks
Y**K
The air leaks out too quickly
I purchased this Bosu ball on June 1, 2025, to work out at home on weekends. However, I’ve noticed that I need to refill the air every week, and I’m wondering if this is normal. It’s not easy to pump air into it, so having to do it every time I use it makes me suspect it might be defective. I’m leaving this review in hopes of finding a solution. I’ve attached photos of the Bosu ball after not using it for a week, as well as photos of the Bosu ball after reinflating it.
M**E
Full body core exercises in a small package
The Bosu Balance Trainer is great for building strength in your feet, ankles, and legs to guard against falling, which is especially important as you get older. This Bosu Trainer’s size makes it easier to store and move around than the larger Bosu trainers.
S**E
Cheaper and better!!!
You can pay much more but not get much better! This is a perfect size for smaller spaces plus I can easily transport it to a community workout center!
J**N
Price is suitable
They are smaller then the original and give a better work out
B**S
Won't deflate under heavy weight
There's a reason why BOSU cost more ... they HOLD UP!! I bought a cheap one a few years back and it lasted a week so I checked out the brand they had at my gym. If you're petite you can probably get away with a cheaper brand but if you're over 200 lbs you're better off going with BOSU.
F**E
Macht Spaß und ist anstrengend. Genau so soll Sport sein
T**N
I'm 5'2", petite build, narrow shoulders The 50 cm model is EXACTLY what my workout needed! I've long used the original Bosu at the gym but found them cumbersome for exercises with the Bosu in my hands. The 50 cm smaller size helps me achieve better form, is easier to maneuver, and I even love the blue / lime colour combo! All the same materials, high quality, and function of the original. Easy set up - was using it within 5 min of opening the box. Highly recommend!
A**ー
体幹トレーニング用に購入しました。両足でスクワットしたり、片足立ちしたり、色々楽しく使えています。
K**S
El producto excelente, lo único que considero que hace falta especificar es que hay un pago contraentrega por gastos aduanales.
M**E
I’m loving the more compact size of this bosu. It’s easier to find places to store it, and it has all the same functionality of the full sized one. My child also loves to use it.
Trustpilot
3 weeks ago
3 days ago