BIRTHDAY GIFTS FOR WOMEN MEN: These socks could be the perfect birthday gift for your mom, dad, wife, husband, sister, brother, aunt, uncle, daughter, son, sister in law, brother in law, daughter in law, son in law, female or male friend. 40 YEARS BIRTHDAY GIFTS: Give her or him this perfect 40th birthday gift to remind them of how amazing they are. Their smile will get even wider when they read the words on the bottom of these socks. Practical, emotional, and humorous, this pair of birthday socks makes a great gift for your friend or family member who is turning 40. 40TH BIRTHDAY GIFT IDEAS: Say it with socks - "I AM 39+1." These are suitable for any holiday gifts, such as Birthday gifts, Christmas gifts, or White Elephant gifts. SIZE & MATERIAL: Our plush coral fleece socks deliver both