Stay Dry, Safe and Controlled with Si Tech made in Sweden; our Mission is to Enhance the Comfort, Safety and Endurance Among Users of Protective Suits. Si Tech is Considered to be a Benchmark within Military, Commercial, Rescue and Recreational Diving Since Early 70´S. All Components are made in Brastad, Sweden. Our Product Range Consists Of; Drysuit Valves; Drysuit Seals; Modular Quick Change Wrist and Neck Solutions; Ring Systems for Dry Glove Attachment; Hoses; Non Magnetic Military, Scuba Gear ...