This TMC Maritime Assault Hydration Pouch is made of composite Cordura material. It does not absorb water and the drainage hole on the bottom. Outside it has loop platform for the patch. It is compatible with all Molle platform. Key Features Material: Made of composite Cordura material Does NOT absorb water Drainage hole on the bottom Loop platform outside for the patch Compatible with all Molle platform Dimensions (cm): 30 (L) x 13 (W) x 4 (H) Weight (gram): 200