I've been on a quest for a LONG time to find training pants that not only catch a whole wee, but that contain it. The search started up again recently when I decided Rose could do not only with pull ups for night time, but a whole nappy was a bit overkill.
On etsy I spotted Busybottomz, their training pants looked good, so I ordered some night time ones. They are very well made, a really good fit and Rose loves them. Easy to pull up and down in the middle of the night, so less chance of a wet nappy in the first place, but the BEST thing is, they caught a whole wee and there was no wicking!! I've ordered 3 more pairs.
Tasha makes day trainers and pockets too, and she's lovely to deal with. http://www.etsy.com/shop/busybottomz?ref=pr_shop_more