This shirt has ventilation on the back. The material is 65% polyester and 35% cotton, which is quick-drying, making it recommended for mountain climbing, hiking, and outdoor activities. It is a beautiful item with no scratches, damage, or fading. Marmot Women's L size Blue and yellow plaid short-sleeved shirt. - Brand: Marmot - Design: Plaid - Colors: Blue, Yellow, White - Size: L Bust: 83-89 cm Height: 160-166 cm ○ Please forgive any oversight of minor details as this is a private sale. ○ All items are one-of-a-kind. ○ Returns are not accepted after purchase to prevent item substitution. ○ The description in the text may be insufficient. Please check the images and purchase only if you are satisfied. ○ Please ask any questions you may have in the comments. I will respond to questions before purchase with sincerity, so I will not accept complaints after purchase. ○ It will be compressed compactly for shipping.