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Editor's Choice
Bowflex
BowFlex SelectTech 840 Adjustable Kettlebell
4.8
Based on 7,512 reviewsReal-World Testing
30 days of real-world testing
Recently Updated
Updated Nov 17, 2025
Technical Specifications
Complete product details
- Item Weight
- 40 Pounds
- Brand
- Bowflex
- Color
- Black
- Material
- Composite
- Product Dimensions
- 8.8"L x 7"W x 12.5"H
- Special Feature
- Adjustable, Ergonomic
- Handle Diameter
- 28 mm
- Recommended Uses For Product
- Indoor
- Global Trade Identification Number
- 00708447912961
- Manufacturer
- Johnson Health Tech Trading
- UPC
- 708447912961
- Item Package Dimensions L x W x H
- 15.75 x 12.99 x 11.42 inches
- Package Weight
- 20 Kilograms
- Item Dimensions LxWxH
- 8.8 x 7 x 12.5 inches
- Brand Name
- Bowflex
- Warranty Description
- 2 years
- Model Name
- Bowflex Selectorize Kettlebell
- Suggested Users
- unisex-adult
- Number of Items
- 1
- Part Number
- 100790
- Model Year
- 2019
- Style
- Bowflex Kettlebell 8-40lbs
- Included Components
- Kettlebell
- Size
- 40.0 Pounds
- Sport Type
- Health & Fitness
- Handle Material
- Rubber
- ASIN
- B07X64MXBS
- Customer Reviews
- 4.8 4.8 out of 5 stars 7,512 ratings 4.8 out of 5 stars
- Best Sellers Rank
- #6,396 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #14 in Strength Training Kettlebells
- Date First Available
- August 28, 2019
- Item Weight
- 40 Pounds
- Brand
- Bowflex
- Color
- Black
- Material
- Composite
- Product Dimensions
- 8.8"L x 7"W x 12.5"H
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About the Author
Expert analysis by Henry Callen
Henry Callen
Expert ReviewerAssociate Editor
Henry bridges real‑world athletics and virtual competition at Review Atlas. He reviews training accessories, recovery tools, and sports games, focusing on mechanics that build real skills. His balanced perspective cuts through marketing, steering readers to gear and titles that make practice more fun—and progress measurable.
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View Full ProfileHow We Tested This Product
Our rigorous, independent testing process
Testing Period
30 days
Tested By
Henry Callen
Our Testing Process
- We purchase all products at full retail price to ensure unbiased testing
- Products are tested in real-world conditions matching everyday use
- Our experts conduct both objective measurements and subjective evaluations
- Reviews are regularly updated as new products enter the market
- Tested according to our Children's Sports & Outdoors Books testing methodology
Last updated: November 17, 2025
|Independently tested and reviewed