ProCage batting cages are constructed of heavy synthetic HDPE fiber which is extruded with a Permanent Black Color and with very important Sunlight/ U-V- Inhibitors throughout each filament- 3 YEAR WARRANTY on most popular sizes- Our netting is manufactured using extremely high abrasion resistant twisted knotted netting, the strongest form of netting in commercial use- What makes our netting better; 3 Year Warranty on most popular sizes- Permanent Black Color ; Each filament is extruded black - will not fade or need re-dying- 100% waterproof ; The absolute best filament for Outdoor Use- U-V- Protected ; U-V- additives extruded directly into filament- Not a coating that will wear off or require re-treating- Twisted Knotted construction ; Strongest form of netting in commercial use- Will not run if cut- Very High Abrasion Resistance ; The biggest factor in long-term tunnel use- Low-stretch ; No drooping overhead ceiling or having to re-hang net due to stretch or sag- Hung Square ; (Like tennis nets) Rated best for appearance- Allows tunnel to open fully and hang straight- Most expensive to produce but best for reinforced edges, corners and seams- Rope reinforcement ; All edges, corners and top hanging ropes use heavy synthetic rope with machine-sewn overlock-stitch- No rope s(more---) SKU: TRGSP009