1.Self-adhesive tape 2.Anti-water,recyclable 3.the surface is ideal for writing 4.Can show bubble or not Co-extruded bubble envelope is made of poly outside and bubble liner inside, and Adhesive or Velcro Closure., which has the toughness and shockproof advantage, supply the best protection. It's a good quake proof, push-proof and scratch proof during transitCharacteristic: 1) Superior cushioning ...