I tested the ASICS Nagino Run Unitard for a few runs and I loved how it does not limit any movement maintaining the compression in the right parts. It is great during the mobility and stretching session too, and surprisingly I found it great for swimming as well. If you want to use a modest and practical attire for swimming this is the right piece of clothing. I hardly find as much versatility as I found it in the Nagino Run Unitard, it is perfect if you have a swim-run session, because you can use it without the need of a triathlon suit (which has the cushion for the bike, and in some cases might be uncomfortable to run with).