What is the circumference of the handles?

Hello John, Thank you for your question. The diameter is about 1.38in, which brings the circumference to roughly 4.3in. Please feel free to call us directly at 925-350 -4111 should you have any other questions. With best regards, Your WorldFit Team

Can you do leg exercises barefoot or will the strap be too uncomfortable?

I personally like to use sneakers, but I use sneakers that I don't wear outdoors, or I clean the soles of my sneakers so that I don't mess up or dirty and degrade the straps while using them. The better you take care of your equipment the longer it lasts. Using bare feet could get a little uncomfortable.

How exactly do you workout your chest with this? Also, is there any way to actually measure your progress?

You can train the chest by shortening it up and positioning it across the back to perform a forward press. This device doesn't really provide a way to measure progress. It is a relatively cheap and portable isometric exercise device. It's best use is for travel or a quick workout when pressed for time. Probably not well suited to a stand alone routine.

Will this work witha Bullworker Classic?

Hello Peter Shmidt, Thanks for your inquiry. No, the WorldFit ISO Trainer is a stand-alone training device. With best regards, Your WorldFit Team

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WorldFit ISO Trainer - Isometric Exercise for Strength Training, Stretching, Yoga, Pilates - a USA Company

WorldFit ISO Trainer - Isometric Exercise for Strength Training, Stretching, Yoga, Pilates - a USA Company

Product ID: 105514976

Details

Brand
WorldFit
Color
Black
Material
Silicone
Number of Packs
1
Style
Pull Up

🎒Ultra-light 1.8 lbs, portable anywhere

💪Boosts strength & flexibility fast

🇺🇸Made in USA with military-grade webbing

¥13439

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

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Description

💥 Elevate your strength game with the WorldFit ISO Trainer—where power meets portability!

WORKOUT ANYWHERE ANYTIME - Weighing just 1.8 lbs, this trainer fits your lifestyle—home, office, travel, or beach day.
BUILT TO LAST MADE IN THE USA - Premium military-grade webbing and durable silicone grips ensure unmatched longevity and reliability.
CONFIDENCE BACKED BY GUARANTEE - 100% hassle-free returns from a trusted USA company—your satisfaction is our priority.
STRENGTH FLEXIBILITY AMPLIFIED - Quickly tone muscles and increase range of motion with safe, controlled isometric exercises.
JOINT FRIENDLY SAFE FOR ALL AGES - Minimal movement reduces joint strain—perfect for beginners to athletes, ages 5 to 105+.

The WorldFit ISO Trainer is a premium isometric exercise tool proudly made in the USA with military-grade webbing and durable silicone grips. Designed for strength training, stretching, yoga, and Pilates, it safely enhances muscle tone and flexibility with minimal joint impact. Lightweight at 1.8 lbs, it’s perfect for workouts anywhere, backed by a 100% satisfaction guarantee.

Specifications

ASIN	B07MJM62ZD
Best Sellers Rank	#78,940 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #660 in Resistance Bands
Brand Name	WorldFit
Color	Black
Customer Reviews	4.7 4.7 out of 5 stars (363)
Manufacturer	WorldFit
Material	Silicone
Number of Items	1
Style	Pull Up
UPC	680577972179

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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¥13439

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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