Sperry Top-Sider put the anti-slip in yachting shoes
The shoe for sailors who demand safety and comfort. The racing shoe. Outgrips any deck. Outcomforts bare feet. Sperry Top-sider … The name for anti-slip comfort. No skidding. 10 racy designs in nylon, sailcloth, leather. $11.00 – $25.00. Write for folder on complete line of shoes, boots and foul weather gear. Sperry Top-Sider, 2 Rubber Avenue, Naugatuck, Conn. 06770
and then added comfort
Literally hundreds of sharp angled slits prevent sidewise slipping as well as fore and aft – the most effective anti-slip sole on type surface; wet, dry, or polished.
sauce: Boating September 1969