To achieve such high strength in such a small package, the Release N Run utilizes Spectra® cord, a material similar to the Kevlar®. Spectra is made by Honeywell® and is one of the world's strongest and lightest fibers. Spectra is, pound-for-pound, fifteen times stronger than steel and is more durable than polyester. To maintain the strength of leash it is important to use the leash properly. Do not let your dog chew the retractable cord, and be careful to not let the stretched cord rub against abrasive surfaces such as rocks or trees, this will cause fraying and compromise the cord.
Yes, the internal retracting mechanism was originally designed for extended use in salt water by scuba divers and for the tethering of tools and weapons for the police and military, so it has been designed for maximum strength and durability. The Release N Run has also been field tested by numerous dogs for several years.
You can wash the RNR by hand with water and mild detergent. Use a brush on the collar for any hard to remove dirt. It is not recommended that you put the RNR in the washing machine. The cord will not retract as quickly when saturated, but once dry it will retract normally.
Contact us within 30 days and we will provide return information; once we receive the item we will refund your money less shipping.