Made of waterproof heavy duty Cordura Ribstop fabric having sufficient padding on the back and had an inbuilt aluminium frame for a study back support. The stitching is done with heavy-duty 3-ply nylon thread, Available in different sizes and colours.Knap Sack and Day Pack are made of Nylon Tetron P.V.C. Coated Fabric stitched with 2 ply Nylon special thread.It has foam padded shoulder straps and hip straps.They have space for packing all accessories required for the purpose.