The long johns are circular-knitted with no lengthwise seams. There is both a gusset in the back to ensure optimal comfort and a fly in the front. Knitted-in cuffs and waistband.Circular-knitted long johns with fly, no lengthwise seams that can otherwise chafe the skin when you move around. The long johns are made from Woolpower’s own fabric Ullfrotté Original 400, which is designed for use as a warming second layer. The long johns are somewhat thicker than Ullfrotté Original 200 and have a gusset in the back to ensure a comfortable fit without feeling tight. Knitted-in cuffs and waistband.Items ship from the UK and take 7-10 days for delivery to NZ