Asics Motion Dry Fujitrail Mens Purple Polo ShirtYou're in control in this top with a roll neck and zip so you can turn up the ventilation or zip up tight as you make your way up to colder altitudes. It's like having your very own support team with you thanks to rubber pads on the shoulder to keep your rucksack in place and a water resistant zip pocket to stash your gels, bars and salt tablets.