Rotating from one pull to the next is natural and intuitive in the R:3. “Flotation didn’t interfere with my stroke,” reported a tester. The suit enables the swimmer to roll through a stroke and extend the arm fully. Both swimmers received a major boost in efficiency from this suit, and it outperformed several of the more expensive suits. Upper-body flexibility is good, but not excellent. Expect a little more restriction compared to the most expensive full-sleeve suits in this review. The difference is noticeable between this suit and this review’s most free-moving full-sleeve.