The Sas-Tec Level 1 back protector is sized specifically for the pocket profile used in Roland Sands Designs jacket. This super flexible design offers the ultimate in high-tech discrete protection and comfort. Even at low temperatures highly flexible viscoelastic soft foam protector provides excellent damping performance: residual force around 25 kN (standard, level 1: 35 kN). Extremely flat construction makes the SAS-TEC CE 1 Back Protector almost invisible under clothing.Fits all current RSD brand jackets. Features: Protectors surpass the required values of EN 1621-1:2012, CE level 1 Protectors are not destroyed by an impact and can still be used Protectors are lightweight Protectors are washable (remove, hand launder separately / water absorption less than one percent