i tried our dd in one last night, she went to sleep okay, which really surprised me, but she woke at 11.20pm and cried, and i took her out of it and changed her into pjs, i offered a bottle but she was to awake and worked up, so i had to let her play for a while before putting her back down.... now i cant say whether it was the grobag or something else that woke her, but i cant remember the last time she cried out in the night, so am thinking it was the grobag..... im too chicken to try it again tonight so i think i will just put her in pjs..... if the grobag thing doesn't work out, in winter i am just going to buy super warm pj's and have layers, plus we have a heater in her room, so should be okay i guess.... its annoying though, wish i had of put her in one earlier so it wasn't an issue.