NOTE : not all designs in display ads are available there are other designs that are not in the ads that you can get/recieved . Our product in the onesie the sizes depend on the BRAND. so not all of our onesie are the same size and length. we just base it on the tag size of the onesie delivered to us by the supplier. If you choose a random option, no matter what style we send to you, you have no objection, please note! Because you chose a cheap option for the boy option and 12m girl option , There are few styles. We recommend that you purchase only one piece. Because we cannot set a purchase limit of 1, you can only make remarks on the details page. Please read the details page carefully before placing an order. If you purchase more than one piece with duplicate styles, you will not be allowed to return or refund the product.thank you. REMINDER: WHEN YOU ORDER A LOT OF OVERRUN ROMPER THERE MAY BE POSSIBLE YOU WILL GET REPEAT DESIGN/COLOR. The thickness of the clothes is similar to the thickness of an adult shirt. Fashion new product 100% new, high quality Item Type: Jumpsuit Footies Gender: Baby Boys Pattern type: cartoon Closing type: with button Material: Cotton Material composition: cotton Sleeve:Sleeve Length Collar: O collar 3M recommended age: 0-3 months, Height: 55-61cm, Weight 3.6-5.7kg 6M recommended age: 4-6 months, Height: 61-67cm, Weight 5.7-7.5kg 9M recommended age: 7-9 months, Height: 67-72cm, Weight 7.5-9.3kg 12M recommended age: 10-12 months, Height: 72-78cm, Weight 9.3-11.1kg (Note: If your child is fat, we recommend choosing a larger size, thank you!!!!) brand new,more desgns,mix brand,randomly given(Items are not all perfect/not with tag/maybe with stain/small hole/washable/or even slightly damage but doesnt affect your wearing)