These are my go-to wetsuit pants. They do a great job holding on to the water your body has already warmed and have very little leakage. I only wish they extended down to my ankles. Their short length is due to them being made for triathlons rather than kayaking.
Also, its not a good idea to do a long portage in these pants. After a few hours they will chafe in your groins and leave some ugly red marks on your skin.
The YouTube video below from Synergy shows how to put on one of these wetsuits. The video is for a one piece, but you the end result is about the same.
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