If your baby’s legs touch the bottom of the SWADDLE UP™ but the fit across the body is correct, then keep using this Swaddle UP™ It is not too short! The length of the bag has been specially designed to be a little shorter so that – as your baby grows – they can push against the bottom of the bag. This pushing action and feeling ’the ends’ of the bag contribute to further SELF-SOOTHING™.