Review on Speed Jump Rope With 4 Metal Ball Bearings For CrossFit, Boxing, And Workout - Boost RPMs And Perfect Double Unders - Comes With Naturalico Carry Case by Ken Pinell

Pros. -good packaging -great instructions -simple to adjust -easy to take on the goCons. -whipping noise will make you workout longer than desiredUPDATE: Not even 3 months after purchase and it's fraying horribly. I only used it twice a week for approx 20 minutes each and never on concrete. I do not consider that heavy usage. I contacted Bella Naturals but I never received a reply from my first email (11/18/15) so I'm not holding my breath awaiting a response I won't get. The 'thank you for your purchase" note to buyers is just lip service. Don't waste your moneyAll is not lost. I can still cut the rope and give it to a child.