23" 9 oz. Green Flame Resistant Cotton Welding Sleeves with 2-1/4" Elastic at both Ends. Size OSFM. Package of 1. **NOTE: FR (flame-resistant) garments are light weight breathable protection that is mainly used for light welding, cutting, and grinding. 'Flame-resistant' means when a spark(s) lands on the garment, the garment will extinguish itself (it wont continue to burn) and somethimes the spark can create a hole on the garment. Consider leather for full protection for applications that are more than light-duty welding, cutting, and grinding.