Desco CW1700 foot and heel grounder has a 1 MGOHM resistor that protects operators from accidental contact with equipment line voltage. This blue grounder features Velcro stretch hook and loop fasten system. This material expands to fit most shoes sizes comfortably and allows the material to flex during walking. The CW1700 foot and heel grounder is very durable. It is constructed with tear resistant rubber with inner scrim which reinforces the material andndash; preventing tearing and increasing its longevity. The 30", 8 conductive strand nylon polyester grounding tab provides additional conductive materials, proving a reliable connection with the operator's sweat-layer. It is UL listed and is made in the USA.