QUICK-CONNECT FUNCTIONALITY - Fast and effortless interlocking connectivity allows you to quickly attach the pouch under the lid of select tool boxes or stack with select accessory cases for a customized configuration 1680D HIGH-DENSITY BALLISTIC POLYESTER - Ultra-durable material resists wear and tear on the job for long-lasting life DUAL-LAYER DESIGN WITH 6 POCKETS - For easy hand tool storage and organization HANGING HOOK & STEEL CLIP - For hanging from STACK PACK Rack Rail Attachments (FS1603, FS1604-2) and easy tool access on the job ONE-YEAR WARRANTY - Register your new products and get a one-year limited warranty on your FLEX STACK PACK toolboxes and organizers