Hiya there!
My party and I ran into a bit of a problem. We bought two types of pipe insulation, a 4-pack of 1/2" x 3 ft, and 3 3/4" x 6 ft foam. Problem is, the 4-pack is 1/8th too small, and the 3/4" doesn't fit the size of pipe we have, a 1/2" pipe. It jiggles around whenever you shake it...