Under trousers or as pajama bottoms, he'll live in these boxer shorts! Printed cotton, machine washable with a full cut, one piece seat, and soft elastic waistband. S (30-32) M (34-36) L (38-40) XL (42-44) The popular dog breed designs aren't necessarily just for him either. These boxer shorts are fun and sassy! Colors and breeds as shown below. Perfect for dog lover gifts!