Optimizing fit, comfort and functionality are extremely important, especially when a poorly fitted suit can impede on a missions efficiency and your safety. Validated by the US Coast Guard, NAVAIR and the SAR Model Manager Office, the Naval Special Warfare, and swift water and ice rescue instructors and trainers, the Sentinel Series is designed to be compatible with all types of equipment used in these environments. The MSD634 is a waterproof & breathable constant wear boat crew dry suit ideal for Law Enforcement and Search and Rescue (SAR) small boat operations where crew members dont intend to enter the water but require hypothermia protection in case of accidental immersion. Features: Made with military grade GORE-TEX bd6.5 waterproof and breathable dry suit fabricAdjustable neck seal can be worn loose to provide comfort out of the waterNeoprene and rubber seals are interchangeable at the unit level using the Rapid Repair TechnologyOptional agency marking package available62 square inches of SOLAS retro-reflective tape for increased visibility2 chest hand warmer pockets (accessible even while wearing a PFD) Cordura reinforcedLarge cordura reinforced leg over cuffs have Velcro closures for adjustability1 calf pocket with neoprene survival hood attachmentRapid Repair Technology enables users to self-replace neck seals and repair small leaks in an hour or lessLarge cordura reinforced over cuffs with Velcro closures for adjustabilityIntegrated universal size GORE-TEX Dry SocksMulti-position fleece lined storm collar for improved protection and comfort Location XS S M L1 L2 XL XXL 3XL Short Long Chest 35-38 37-40 39-42 41-44 43-46 45-48 49-52 53-56 n/a n/a Waist 29-32 31-34 34-37 35-38