Seaver Cavalleria Toscana Set Of 3 Cartridges 24g And 33g For AirbagThe Seaver gas cartridge screws onto the SAFEFIT vest. It allows the vest to inflate upon a fall, absorbing impact and keeping you protected The Seaver 24 g cartridge is compatible with sizes XXS, XS and XS Long The SAFEFIT vest must not be used without a gas cartridge. The Seaver 33 g cartridge is compatible with sizes S, S Long, M, M Long, L and XL Only a gas cartridge suited to your SAFEFIT vest can guarantee optimal protection when the airbag