Our Happy Girl dresses are made of a silky, light weight, VERY breathable fabric. You will also find this is the perfect travel dress, packing up to a small, tight cylinder and NEVER wrinkles. Our silky Lady Hike fabric (96%poly, 4%spandex) is amazingly durable and so easy to care for. Wash on regular again and again, and it quickly air dries and is ready to go. Did I mention this dress is perfect for travel and backpacking?