One 'Staching Through the Snow Onesie. Choose from 6, 12, or 24 month sizes, in Green, Red, or White. Go see Grandma in style with this 'Staching Through the Snow Onesie! This über-cool onesie features a sassy mustache and cheerful lettering. Let your baby be the stand-out elf at your family's Christmas celebration this year, or dress baby up for exciting holiday shopping.