Key Features 1. Versatile Can be used as a soft air cushion by injecting the air. During the hot summer, can be used as a cooling cushion by filling the cold water. Good for patient, sedentary workers, students, drivers to prevent bedsore. 2. Comfortable convenient Great body pressure distribution - embossed surface design. embossed surface of air cushion Easy to inflate or deflate - can carry to outdoor events, travel, camping, etc. Leak-proof rubber hole in the back. leak-proof rubber hole of air cushion 3. Caution When filling the water, fill only up to 2/3 of it - DO NOT fill full. BE CAREFUL avoiding scissors, knife or any sharp materials. 4. Size - 42 x 40cm(16.5 x 15.7") Material - PVC For more great items, check out our store! We have Acupuncture Foot Massager Mat, Compression Stockings, and many more hard to find health care products. Payment We accept Paypal, Moneybookers, Western Union, Wire Transfer. Shipping 1. Buyers outside US MUST contact us first for postage and availability. 2. We'll ship this item within 3~4 business days after receiving payment. 3. You can choose one of the following shipping methods: 1) Registered Air Mail - Usually takes 10~20 BUSINESS days after we ship. 2) Expedited Air Mail(EMS) - Usually takes 5~8 BUSINESS days after we ship. 4. Actual shipping time entirely depends on your country's Customs and postal service. They can hold the item and delay its delivery for SEVERAL months. 5. Buyers are responsible for Customs charges or any taxes. We do not mark an item as a 'Gift' or undervalue its price. Tracking 1. After shipment we email you RR number(Registered Air Mail) or EM number(EMS) for the tracking. 1) Registered Air Mail - Online tracking is NOT available. MUST allow 10 BUSINESS days after it's shipped and CALL your Post Office. 2) Expedited Air Mail(EMS) - Online tracking is available at USPS site. 2. Your item is coming from across the Pacific Ocean. Please allow the above minimum shipping time before you contact us.