I offer one free alteration per sling. Shipping is your responsibility. If your sling cannot be altered to fit you, you may exchange it within 30 days, in new condition for another sling of your choice. If you need an exception to the 30 days, ie you were 4 mo. pregnant when you purchased, please email me. I will do my best to make it work for you. For shipping information email me at Shanna@Sweetslings.net