Waterskin
A water or wineskin holds 1/2 gallon of liquid and weighs 4lb when full.
Empty Weight: – Capacity: 1/2 gallon/4 lb.1
1 When made for Medium characters. Weighs one-quarter the normal amount when made for Small characters. Weighs twice the normal amount when made for Large characters. Containers carry one-quarter the normal amount when made for Small characters.