100PCS 18650 Landmark Series Battery Protective Wraps Cover, Sleeves Heat Shrink PVC Tubing Tubes 100% Authentic Pre Cut Shrink Film 5 Styles Replacement Cover Skin

These are so easy to use. My only complaint is that they come folded flat so when you apply them to your batteries, there is a wrinkle where it was folded. Other than that, they work great. Don't lose the paper disc that is on your positive end of your battery because these are not included with these wraps.

Alittle thin but they work

Great