Tingley Weather-Tuff heavy duty waterproof overalls provide protection when you need it most. Therm-O-Rad sealed for 100% waterproof protection. Heavy-duty 0.40mm PVC on Polyester. Soft, supple feel for all-day comfort. Take-up snaps on overall waist for an adjustable fit. Non-conductive, non-corrosive snaps and buckles. Heavy-duty elastic suspenders with quick-release buckles and crossover. Hook and loop take-up straps at ankle cuffs for an adjustable fit. Tingley is ISO 9001 Certified.