The Besto wipe clean Twin Chamber is an automatically operated life jacket designed for use on open sea and in all weather conditions.SPECIFIC MARKTS:- Codura cover and tailoired design- Size/type: 43+ kg- Zipper- Twin chamber- Fleece collar- Solas Safety Lights- Buoyoncy: 300N- System: Halkey Roberts V9000- Co2 cartridge: 60 gram- Asymmetrical longs- Double crotch strap