DORSAL floating bodyboard fins in red/yellow are designed for bodyboarding, bodysurfing and swimming. These swim fins, also called boogie board flippers, give you a compact fin option for your next ocean session. Fit and sizing Choose your fin size using the men's US shoe-size ranges below. Check fit before entering the water; the fins should feel secure without pinching. Fin size Men's US shoe size XX-Small 3 - 4 X-Small 5 - 6 Small 7 - 8 Medium 8.5 - 9.5 Large 10 - 11 X-Large 12 - 13 Product details Color: Red/Yellow. Floating design. Intended activities: bodyboarding, body surfing and swimming.