I have 4 canteens with slings. 2 are Type 87s, one with a green sling and the other with an olive sling. I think the fuzzy brown one is a vintage boy scout canteen probably from the 70s if anyone is interested in that. The fuzzy outer layer is to keep it insulated. It's capacity is two times more than that of the Type 87. The large green one has even larger capacity. It was issued to Chinese troops in Tibet and has an internal layer of insulation between the outer shell and the interior canteen space, and has a cork with a twist off cap/cup (large green Tibet SOLD). Price is $15 each + discounted shipping with shipping quote before payment.