HI-VI Fabric: The Foundation of Engineered Visibility HI-VI Fabric is a premium, high-performance textile engineered to maximize safety and visibility in all conditions. By integrating advanced fluorescent dyes with durable construction, this fabric ensures wearers are seen, day and night, reducing risk across both demanding professional environments and active recreational pursuits. Choose HI-VI Fabric when uncompromising safety and lasting quality are essential. Polyester 85% cotton 15% Hi Vi yellow, Hi Vi orange: 270gsm Cotton 50% recycle polyester 50% Hi Vi yellow, Hi Vi orange: 280gsm