Heavy-duty coated foam 11.5" BRIGHT COLOR - Bowl with bold color Rhino Skin pins perfect for physical education, gym classes at school, lawn recreation, or your home game room WEIGHTED FOR STABILITY - Don't worry about the wind or slightly uneven surfaces ruining your game ideas; each pin is weighted to stay in place so you can bowl over and over PERFECT FOR PRACTICE - If you're a beginner trying to become the best, you need the right accessories; this multi-surface equipment helps develop your control and technique for the real bowling alley PERFECT FOR KIDS, ADULTS - This set makes bowling a fun, cool game for men, women, boys, and girls; the perfect sporting goods for a backyard birthday party, vacation, and more