For where the cold water shipping area, Navy, fishing vessels, offshore, cargo & passenger ships. the body temperature does not fall more than 2 degree after immersion in 0 C cold water for 6 hours. Our immersion suit is designed with a buoyancy pillow, so does not need additional life jacket.Material: Water-proof polyester oxfordReflective tape: SOLAS reflective tape,5cm×10cmBelt: black webbing belt with steel D-ring.Boots: Neoprene Material with Rubber soleAccessories: water-proof Light, whistleSize: XL, L, M, SWeight: 5.0 kgBuoyancy: >142 N