External loops are compatible with any Peak Design strap, sold separately. Weatherproof recycled 400D nylon canvas shell with high-density foam sub-lining keep your gear safe and sound. Tear-away main opening has a tuck-away flap for faster access when the cubes are packed in your bag. weatherproof recycled 400D nylon canvas shell with high-density foam sub-lining keep your gear safe and sound. External loops are compatible with any Peak Design strap, sold separately. Designed to mount securely in any Peak Design Travel Bag, Camera Cubes give you custom organization and protection, whether you’re carrying a small mirrorless kit or a full professional creative setup. Ultra-protective yet easily accessible, Peak Design Camera Cubes take the pain and hassle out of traveling with photo, video, or drone gear.