3 PIECES: Three pieces, an inner part, an outer part and a valve cap. Made of high density PVC plastic, which is sturdy, corrosion resistant and durable. LEAKPROOF: Double air seal, excellent air leakage performance. DURABLE MATERIAL AND EASY USE: made of PVC plastic high density, solid, corrosion resistant, easy to inflate and deflate, good performance and long service life. WIDE APPLICATION: Suitable for most inflatable boats, river rafts and kayaks, dinghies, etc. GUARANTEE: If you are not satisfied with the product you received, you can request an unconditional return and refund within 180 days. Any problem about this product, you can send emails to us at any time. We will respond as soon as possible.