PKB Kettlebell Set - The Best Exercise Equipment For Your Workout - Adjustable Kettlebells - Portable Weights - Soft Kettle Bell - Weight Set For Fitness - SATISFACTION GUARANTEE! Designed to fit inside the PKB Large (Blue) or PKB Regular (Red), the TANK can hold up to 22lbs of water weight Handmade of highly-durable material - The TANK is designed to last with proper care (The TANK is not made for slamming - Slamming will void warranty) Each TANK is shipped with a small funnel for easier filing under the tub or with the water hose Each TANK comes with a 1 year warranty - Please do not slam the TANK Buy it TODAY! No risk with our 100% Money Back Guarantee! Return it for a full refund no questions asked!