IDEAL WATER TEMP : 46˚ - 55˚ F CHANNEL FLEX - WEIGHTLESS, UNRESTRICTED STRETCH ALL NEW CELLIANT BLACK - STAYS WARMER QUICK-DRY FIBERS - STAYS DRIER DRYLOCK ANKLE SEALS - LOCKS WATER OUT ERGO STRAP DESIGN - LESS PRESSURE PULL UP ANKLE LOOP  EASY ENTRY TAITEX OUTER SEAM - DURABILITY TAPED SEAMS - DURABILITY 3 DIMENSIONAL FOOT MOLD - CONTOURED FIT SINGLE RUBBER BOTTOM - DURABILITY WITH BOARD FEEL Xcel DRYLOCK SPLIT TOE BOOT 5MM