NIB Size 2T Tog 2.0 Continuing the trusted bedtime routine, our Toddler Sleep Sack is designed for your little one's next steps in safe sleep. Worn over pajamas, the Sleep Sack for Toddlers gives the feeling of a soft blanket but can't be kicked off or tangled throughout the night. Adjustable features and convertible footies allow the Toddler Sleep Sack to accommodate a full year of growth with mobility in mind. 2T feature an inverted zipper for easy diaper changes. Made with premium fabric and no added chemicals, the HALO Toddler Sleep Sack is available in 100% cotton and Luxe fleece.