37″ Resistance Bands


You asked, we listened! Serious Steel 37″ bands were developed to keep you under tension throughout your full range of motion.


  • Thickness: 4.5mm
  • Length: 37″
  • Material: 15 Layers of 100% Natural Latex and over 99.9% free of soluble proteins (latex allergens)
  • Resistance: 7-sizes, 2lbs-200lbs of resistance
  • Sold individually
  • Source: Sri Lanka
  • Color(s): Orange (#0), Purple (#1), Red (#2), Blue (#3), Green (#4), Gray (#5), Yellow (#6)


  • #0 Band: 1/4 in. 2-15 lbs.
  • #1 Band: 1/2 in. 5-35 lbs.
  • #2 Band: 13/16 in. 10-50 lbs.
  • #3 Band: 1 1/8 in. 25-80 lbs.
  • #4 Band: 1 3/4 in. 50-120 lbs.
  • #5 Band: 2 1/2 in. 60-150 lbs.
  • #6 Band: 3 1/4in. 80-200 lbs.

Care Guide

  • Storage: Keep out of direct sunlight, humid environments or excessively hot or cold temperatures.
  • Cleaning: Yes, bands can be hand washed. Hand wash with warm water and a non-abrasive cleaning solution. Hang to dry. (Ex. Dawn dish soap).
  • Caution: Avoid direct contact with knurling, asphalt, concrete, or any abrasive surface. If using your band on any of these or a board system, we recommend a protective barrier like our Band Guard, a towel or old shirt. This helps maximize the durability and life of your band.
  • Life Span: Based on average use -which we assume to be 1-hr of use 3 times per week- bands should last 12-18 months in residential settings and 6-9 months in commercial settings.
  • Normal Wear & Tear: Our bands are one continuous piece of latex made through a proprietary layering process with a total of 15 layers. Over time the bands may begin to peel or show other signs of use. This is normal and does not affect the integrity or application of bands when minor. If peeling gets worse, it may be a sign that your band is aging and may be due for a replacement.

It was in the 1980’s when Coach Dick Hartzell introduced 41” resistance bands into strength training. For nearly 40 years, this was the only size available. That all changed in 2020 when we released 32” resistance bands. The 32” bands were specifically brought in for banded resistance training and for users who needed less slack in their bands. Generally, users under the height of about 5’10”.

After the release of the 32” bands, we immediately received requests for a band that was in between the 32” and 41” length. Over the past 18 months we have been hard at work testing different lengths, widths, and thicknesses. We are happy to report that these bands will be the same thickness and width as our 32″ and 41″ bands. This consistency will hopefully make for an easy transition from one length band to another.

What can you expect:

  • 37” in length, 15 Continuous Layers
  • Same thicknesses (4.5mm) as our 41” and 32” bands
  • Same colors as our 41” and 32” bands (Except for #5 which is traditionally black, is now gray)
  • Different logo designs and color
  • Same high-quality latex
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