King's StoreU.S. Nylon US Flag(90x150cm) 100% polyester is the best material for flags as it is very strong and light.allowing the flag to dry faster and fly better. Generally speaking ice, heavy winds, ocean air and rains affect flags and shorten their lives. RESISTS TEARING AND FRAYING--Combines durable construction and a reinforced fly hem so your flag lasts longer than other flags. specifications;(90x150cm)