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

Product ID: 105514976

Details

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

🎒Ultra-light 1.8 lbs portable design

💪Boosts strength & flexibility fast

🇺🇸USA-made military-grade webbing

€ 111.06

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Elevate your strength game—portable power, made in the USA 🇺🇸

BUILT TO ENDURE - Crafted with US Military 1st Grade webbing and durable silicone grips for unmatched longevity.
ANYWHERE ANYTIME - Weighing just 1.8 lbs, take your workout from home to office, beach, or travel with ease.
CONFIDENCE GUARANTEED - Backed by a 100% hassle-free return policy from a trusted USA company.
STRENGTH MEETS SAFETY - Isometric training that’s gentle on joints but powerful on muscle toning and endurance.
VERSATILE FITNESS TOOL - Perfect for strength training, stretching, yoga, and Pilates—suitable for ages 5 to 105+.

The WorldFit ISO Trainer is a premium isometric exercise tool proudly made in the USA with military-grade webbing and latex-free silicone grips. Designed for safe, joint-friendly strength training, stretching, yoga, and Pilates, it enhances muscle tone and flexibility for users aged 5 to 105+. Weighing only 1.8 lbs, it’s your perfect portable fitness companion, backed by a 100% satisfaction guarantee.

Specifications

ASIN	B07MJM62ZD
Best Sellers Rank	#87,843 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #727 in Resistance Bands
Brand	WorldFit
Brand Name	WorldFit
Color	Black
Customer Reviews	4.7 out of 5 stars 364 Reviews
Manufacturer	WorldFit
Material	Silicone
Number of Items	1
Number of Packs	1
Style	Pull Up
UPC	680577972179

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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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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.

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