Sea To Summit X-Series Sets 3 piece for your next meal outdoors: Sea to Summit's X-Bowl, X-Plate, and X-Cup are collapsible hybrids comprised of a rigid, cut-resistant base made of high temperature, food-grade nylon and walls made of food-grade flexible silicone, so they fold flat for compact packing. Each are tough enough to handle chopping with their sturdy nylon base. The silicone sides can withstand temperatures of hot foods and nearby hot surfaces up to 300 degrees Fahrenheit. The sides are flexible, so pouring liquids is easy. When collapsed down flat, the X-Bowl fits snugly into the X-Plate for extra space savings when packed. The X Set will save space on your next trip without sacrificing space.