Can be used with baby carriers and strollers. The elastic all the way around prevented my child's legs from sticking out, keeping them warm. The inside is fleece and warm. This is a used item, so please understand that it is a pre-owned item. Thank you for your understanding. I only used it about twice, as it was the time of year my child was born. I have checked the item before listing it, but there may be oversights. Thank you for your understanding. Please feel free to contact me if you have any questions. Thank you for looking.