Nettleton's low-top trainers are crafted from supple calfskin leather using the same time-honored techniques used to make the brand's signature accessories. They're set on contrasting soles that prove comfortable for long days on your feet. Calfskin leather upper Round toe Lace-up vamp Lining: Calfskin leather Synthetic sole Made in Spain. Shoes - M Core Shoes > Saks Off 5th > Barneys Warehouse. Nettleton. Color: Tan. Size: 12.