To use this pouch, simply open the hook-and-loop adjustable flap and place your 40 mm grenades inside. Close the flap firmly to keep your items secure. When it comes to maintenance, use a damp cloth to wipe the pouch clean. Avoid using harsh chemicals as they may damage the material. Always check the hook-and-loop fastener regularly to make sure it's in good condition. Also, store the pouch in a cool, dry place when not in use.