Bikemonger says..... The same tough polyurethane straps but with a nylon buckle - 'for when conductivity is an issue'. Cycling in a thunderstorm perhaps? Also less likely to scratch your frame.
 

Voile says..... Voile Straps® are made of tough stretch polyurethane, with a UV-resistant additive to increase their lifespan.

Their Super Tough nylon buckle is non-marring, non-conductive, and non-reflective.

Few things in life are as reliable as the original Voile Strap®. Over the last 30 years they have become the ultimate alternative to duct tape, nylon straps, and bungee cords.

On the job, in the outdoors, and everywhere in between: they are the definitive way to secure, bundle, and repair almost anything on the go.

• Slim Profile
• Won't Slip
• Holds Tight
• Super Strong
• UV Resistant
• Works in Extreme Weather
• Daisy Chain Together
• Time-Tested Design

Lengths: 15"/38.1cm, 20"/50.8cm, 25"/63.5cm
Width: 3/4"/19mm
Material: UV-Resistant Polyurethane
Buckle: Nylon