Boys Mother's Day Onesie - Just a Boy Who Loves His Mama Onesie - Mother's Day Onesie HOW TO ORDER: 1) Choose onesie 2) Select design color if applicable 3) Enter customization in “Add your personalization” field 4) ADD TO CART 5) Select from our shipping class options ONESIE SIZES 0-3 Months :: 21-24 in. / 6-12 Ibs. 3-6 Months :: 24-26 in. / 12-16 Ibs. 6-9 Months :: 26-28 in. / 16-20 Ibs. 12 Months :: 28-30 in. / 20-24 Ibs. PERSONALIZATION IF the item includes personalization, enter in the “add your personalization” field on the product page.