I have the T1 full and Tres Vest. The size 4 full top is snug for me, but works well and is easy to remove. However, the size 4 vest is too snug even when wet and difficult to remove. The neoprene used to make the vest seems stiffer and, if so, might be the reason it is more difficult to remove. I've recently asked them to exchange the vest for a size 5 even though it's been about 30 days and they have a 14-day satisfaction guaranteed policy on their wetsuits. Do a search in slowtwitch for a thread on removing the T1 wetsuit. It was loaded with lots of helpful hints. Other than the vest fit, I'm very satisfied with the product.