85% spandex , 15% polyester LARGE SIZE: The upper opening size is 13.3in(34cm), the lower opening size is 27.5in(70cm) , the high size is 26in(66cm). Nursing cover are large enough and stretchy, so it can fit mommy who is plus size and almost kinds of baby car seat. SOFT and BREATHABLE: This breastfeeding cover is made with 85% spandex and 16% polyester, which is breathable fabric. It is stretchy and soft but also resistant, compact, lightweight and reliable which offers the ultimate comfort for both mom and baby. 360 FULL COVERAGE: Providing full privacy coverage and enough space while nursing. Offering a cozy, cool and breathable environment while your baby sleeping in the stroller or car seat. It also helps protect your baby from sunlight, wind, rain, bright light and curious strangers. Taking care of babys fragile skin. VERSATILE COVER: Multi-use covers for new mothers nursing cover, breastfeeding covers, car seat canopy, carseat cover, stroller sun protection covers, shopping cart cover, feeding chair cover, carrier sunshade, even a infinity nursing scarf. PERFECT GIFT: Excellent design, modern and fashion pattern, build it can be the practical perfect gifts for new mothers for any occasion, such as baby shower days, baby birthday, Thanksgiving, Christmas, Mothers Day and Childrens Day. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.