MUTE Sports is the manufacturer of all Split Ropes. They are made in the USA! The Buffalo Split Ropes are dark silver color resin impregnated poly rope for extreme durability and long life. MUTE'S BUFFALO Version weighs about 1 POUND per side (plus the 4 ounce handles). MUTE Split Ropes are for anyone! It is a seated jump rope. You will receive one PAIR of BUFFALO MUTE Split Ropes. Some examples of people who are currently using these ropes are: wheelchair users, traumatic brain injury, cerebral palsy, quadriplegic, paraplegic, geriatric, obese, arthritic, back and foot pain/surgery/broken bones and for therapy. MUTE Split Ropes will give you similar benefits to jumping rope such as work your cardiovascular system, shoulders, grip, forearm, and core. It is also a great tool for balance, coordination, and stability. They need to hit the ground as to feel the resistance which causes the engagement of the core muscles and to maintain stability. (*being a black sleeve, it may make marks on certain floors)