ABS Zip-Ons
ABS zip-ons can be zipped onto an ABS vario base-unit easily. This enables you to quickly adust the volume of your ABS pack from a light and nible 18L "ultralight" to a big 40L pack. The airbag and cylinder is not included with these zipons. Please check out 'avalanche airbag systems' for a complete ABS airbag including a cylinder and vario base unit.