Arena Powerfin Pro II

Customers say these fins are comfortable, durable, and excellent for training. Many appreciate the open-heel design with back strap that stays secure during flip turns. Users find them effective for building leg strength and improving kick technique, though they require more effort than longer fins. Common feedback includes praise for the quality construction and immediate propulsion they provide. Several reviews mention sizing challenges, with many noting the fins run small or tight, requiring careful size selection. Some users experience rubbing on toes or feet from the open-toe design. Swimmers report the fins work well for various strokes, particularly freestyle, though some find them less suitable for butterfly.