★ If you're tired of endless sit-ups and would like a professional quality, ultra durable, burst-resistant exercise ball, perfect for tough workouts and everyday use, our Exercise Balls are the ideal choice for beginner and advanced use! ▶ Non-slip Surface - Pressure and Explosion-proof. ▶ Intimate Air Plug - Easy to Storage and Use. ▶ Multiple Size Options - Suitable for Various Body Types. ▶ High Grip - Non-slip surface for safe use when performing weighted exercises. ▶ Perfect for use with yoga, pilates, or for general strengthening & balance. ▶ Perfect for any fitness level ★ Inflation step : ▶ Step 1: Pull the valve plug out of the sphere and prepare the inflatable tube. ▶ Step 2: Insert part of the inflatable tube into the hole and inflate it with mouth/inflatable pump. ▶ Step 3: When filled with gas, quickly plug the hole with the valve plug. ▶ Step 4: Inflatable completion,enjoy the yoga. ★ Would you like a super durable exercise ball with an ultra safe, high grip surface? If so, our Exercise Balls are the perfect choice! ★ About the color difference: Due to the difference in light and people's different understanding of color, there may be a certain color difference, but within a reasonable range. ★ If you are not satisfied or the product is damaged, please contact us by email, we will solve the problem for you, or a full refund, please believe us!