Description Upper: 100% Nylon Lining: 100% Polyester Knitted welt: 90% Polyester, 10% Elastane – summer version of the US MA1® flight jacket – robust front zipper made of metal – 2 side pockets with flap and snap fastener – 2 inside pockets with snap fastener – press buttons with propeller symbol – patch upper arm pocket with zipper and arm office – upper arm pocket with ‘remove before flight’ tag – knitted welt on collar, sleeves and hem