Puma Enzo NF Mens Trainers The Puma Enzo NF Trainers feature the brands unique Netfit lacing system allowing you to customise your fit, complete with a Soft Foam sockliner for step in comfort.>Mens trainers>Netfit lacing system>Bootie style construction>Soft Foam sockliner>Cushioned midsole>Durable rubber in hard wearing areas