This is a single, size 170, antibacterial and odor-resistant undershirt for boys, made of 100% cotton. It was originally part of a 2-pack, but only one was used. The remaining shirt is brand new and unused! - Brand: GUNZE - Size: 170 - Material: 100% cotton - Quantity: 2-pack (one remaining) - Features: Antibacterial and odor-resistant - Target: Boys Thank you for looking.