Si3N4 ceramic roller balls for enhanced frictional/thermal/shock/impact resistance

(approximately 250 hours in transmit only or 50 hours in search only)

Constructed from Grilamid®

canvas upper with butted seams and rubber backing helps reduce friction and provide durability

molded heel counter

SPY Czar Soft Matte Black Happy Gray Green XXL Si3N4 ceramic roller balls forThe King of Kings, the Czar is a big frame with big style. Built from virtually indestructible Grilamid, the Czar features a flat top double bar bridge and 5 barrel hinges. With clean lines, a larger shape, and UV protection lenses, these sunglasses are a must have for anyone who demands bold style and maximum coverage. Features: Constructed from Grilamid, a lightweight frame material ideal for everyday wear due to its strength and flexibility 4 base