i love this product ! i dress my baby in long sleeve\/long leg all-in-one PJs , then place he in the sack . he stay nice and warm all night and can roll around the crib as much as he like !! although i try to avoid diaper change at night , if it be necessary the zip make it easy to change he without wake he up too much . it be super easy to wash with all he clothes and dry well in the dryer -lrb- i use the low heat setting -rrb- . definitely recommend this !!