A sleeve for a body roller has a main area, a first flap and a second flap. The main area has a first lateral side, a second lateral side, a first wrapping end, and a second wrapping end. The first flap is near the first lateral side and extends from the first wrapping end. The second flap is near the second lateral side and extends from either the first wrapping end or the second wrapping end. The main area has a length from the first wrapping end to the second wrapping end that is less than a circumference of the body roller such that when the sleeve is wrapped with the length oriented around the circumference of the body roller, an opening is formed between a first inner edge of the first flap and a second inner edge of the second flap.