Materials
The Stio Environ bibs are constructed from Stio’s Dermizax polyester and tricot backer, with YKK storm sealed zippers to stand up to the harshest conditions Mother Nature has to offer. 

Comfort
The Environ bibs aren’t the least comfortable bib in this test, nor are they the most. The bibs articulate well and feature an elastic back panel at the waist which stretches to fit the user. Being thick, the material feels stiff compared to other bibs we tried.

Temperature Control
Being the only bib in this test with full-length leg zips from hip to ankle, the Stio Environ is easy to air out when things start to warm up. However the material is thick, durable, and performs great in cold weather conditions. On warm spring days this bib might be overkill, unless the side zips are fully opened for the entire tour, but then again who tours in bibs on warm spring days anyway?

Features/Functionality
Along with the full-length leg zips comes a dropseat configuration. Storage is somewhat minimal with the Environ bib compared to its counterparts as it only features 3 pockets (2 side and one front). The suspenders are lightweight and easy to adjust, and the fly features a double slider zipper for easy access.

Fit
The Environ bib fits true to size and runs on the relaxed side, making layering underneath easy and providing freedom of movement.