The M1910 Canteen Cup has the same cross-section shape as the canteen body, but is a little larger so the canteen can nest into the cup. The canteen cup capacity is about three cups (24 oz.) if completely full. The cup also featured a foldable handle, held in place by four rivets on the side, secured by a sliding latch. The handle had two slots cut in it which could be engaged by a fork (not included) if the cup handle itself was too hot. The 1910 model cup could be conveniently stowed in the canteen carrier and the canteen would fit inside the cup.
The M-1910 aluminum cup had a rolled edge on top, a problem since it got too hot.