Gianni Kavanagh Men Black Neon Reaction Jeans. Composition: 92,5% Cotton 5% Polyester 2,5% Elastane. Color: Black. Description: Black Neon Reaction Jeans. Skinny ft. Featuring 5 pocket style and ripped details. GK synthetic leather plaque on the back pocket and personalized elastic belt, in contrast Neon Yellow. Adjustable strings and black metallic accessories. A comfortable fit, made in a soft and stretch denim.