Spiritus Systems Fat Strap Mk4 gym this low-profile zipper kit levels

this low-profile zipper kit levels up your loadout with mission-driven efficiency

and breathability

stretch-woven VTX RIPSTOP™ fabric offers unmatched mobility and breathability- ideal for long missions

true MOLLE flexibility on all sides

Spiritus Systems Fat Strap Mk4 gym this low-profile zipper kit levelsSpiritus Systems Fat Strap MK4 Tactical Chest Rig H Harness Streamlined. Modular. Mission Ready. The Fat Strap MK4 is the next evolution of Spiritus Systems universal H harness, engineered to integrate seamlessly with the Micro Fight Chassis, 34A Split Chest Rig, and Thing 2 expansion chassis. This rugged, no nonsense design cuts out the fluff and delivers just what you need: comfort, compatibility, and customization without the bulk. Crafted with a