Acne Studios Riding Boots, Size EUR 37 UK 4. Condition is y. Black boots are one of the things ACNE does best. Made from smooth calf leather, this pair borrows from riding styles with slim, knee-high shafts and buckled bands at the necks. They're set on hard-wearing leather soles with low heels. The slip-into pair is made from polished calfskin leather with slanted toplines and slightly raised block heels. upper: calf leather lining: leather sole: leather insole and sole RRP £1,199