Trunk Men Swim & Surf Swim Trunk Lined Blue Size M The Trunk Men Swim & Surf Swim Trunk in Blue, size M, is a stylish and functional swim trunk designed for men. These lined swim trunks are perfect for both swimming and surfing, with a durable construction that is machine washable for easy care. The beach-themed design adds a touch of style to your poolside or surfside look, making it a versatile and practical choice for any water activities.