Ultimate Survival Technologies FlexWare Coffee Drip Collapsible single-cup silicone drip coffee maker for camping, backpacking, hunting, rvs, and more Simply place on top of a cup or mug, add filter and coffee grounds, pour hot water, and let gravity take over to make hot, fresh coffee Sleek design saves space and makes storage a breeze Made of thermoplastic rubber (TPR); BPA-free and dishwasher safe Weighs 3.6Ounces; collapses down to 0.75 x 4.5 inches (hxw)