Those are Mod wraps/skins, OP is looking for Battery wrapsjwraps.com, vaporskinz.com, zapwrapz.co.uk, mightyskins.com
I've bought from the first and the last; both were good quality.
Andria
Those are Mod wraps/skins, OP is looking for Battery wraps
I actually just got a heat gun, they're cheap and do a lot better job than a blow dryerThese are really nice deal if you have a bunch of batteries.
100 (So 20 of each) for $16.99
www.ebay.com/itm/100-Pack-Pre-Cut-18650-Battery-Wraps-Cover-Protective-Sleeve-Heat-Shrink-Wrap/263486805379
EDIT: Whatever you do DON'T forget to get these with your wraps:
www.ebay.com/itm/18650-Battery-Insulators-40-pieces-Insulation-paper-ring-self-adhesive-white/323079968627
Insulator rings with adhesive for the positive of the cell are really important to having a safe cell.
I tried using the old Insulator rings once but the blow dryer kept blowing them away.
These have adhesive and are so much better then recycling the old ones.