21ST BIRTHDAY GIFTS: The top of the socks features birthday gifts, birthday hats, cakes and other elements, the bottom features a hilarious secret message written in non-slip ink: "SO HAPPY I'M 21 TODAY."
SIZE: Our unisex birthday socks fit most men's US size 6-13 feet and most women's US size 7 and up. Each exclusive gift box contains one pair of novelty socks.
QUALITY MATERIAL: Our 21st birthday socks are made of 80% cotton, 15% polyamide, and 5% elastane to ensure they are soft, comfortable, stretchy, and breathable. They won't fade and are machine washable.
GIFTS FOR 21 YEAR OLDS: They make great gifts for your brother, sister, son, daughter, grandson, granddaughter, nephew, niece, girlfriend, boyfriend, male or female friend.