With its 3D design and soft outer cover , the Besto 165N has a perfect fit . The collar is firmly connected to the back and neck. Due the 3D fit it provides a safe and comfortable neck support. The jacket is fitted with a Crotch strap to make the jacket work better and gives an higher freeboard. The jacket is available in several variations and in various colors: Specifications- Weight: 40+ kg- Bouyancy inflatable 165N - System United Moulders MK5- CO2 cylinder 31-33gr CO2- Crotch strap- All Weather Cartridge- Complies with ISO 12402-3