Toy Cubby 7 Ft Fun Exercise Nylon Jumping Ropes for Kids - 12 Pieces 12 pieces Nylon Jumping Ropes. Made of durable nylon that can withstand rough handling. Measures 9 ft in length and comes in adorable assorted colors- Green, Red, Blue, Purple and Yellow. Helps children get into exercise while having fun and keeps them busy for a long period of time. Great for kids and adults, helps burn more calories.