Is your child refusing a sleeping bag? Let us introduce a Sleep Onesie to your sleepwear stash. This relaxed fitting ergo pouch onesie is suitable for wriggly worms from age 6 months up to adventurous 3 year olds who prefer sleepwear with freedom to move. A perfect piece if your toddler is toilet training or ready to graduate from their cot into a bed (and is likely to kick their sheets off).