Tingley pulsar knee boot, composite safety toe chevron plus, 15″h, blk/grey, size 3 15″ ht. – composite safety toe (cst). Meets astm f2413 m/i/c for safety toe caps. Injection molded construction for 100% liquidproof protection. Soft and flexible upper material for all day working comfort. Calf relief expansion (cre) expands up to 1.5 inches for more calf comfort. Cutline at 12″ to facilitate fast and clean height modification. Chevron plus treads provide excellent slip resistance on wet contaminated surfaces and have more cleat material than standard chevron designs for longer service life. Long lasting outsole provides good abrasion and chemical resistance, yet is soft enough for excellent slip resistance and walking comfort. Beveled heel for reduced back and leg strain. Tread wear indicators (twi) in the outsole on forefoot and heel show when half the tread has worn away. Removable insole: contour cushioned insole absorbs moisture and shock for outstanding comfort.