The Kettlebell — Reimagined. The NEWF KETTLEBELL is everything that a kettlebell should be… and then some. Being a sand filled kettlebell, the 0-45lbs fill capacity and Wide Mouth funnel filler insert allows for easy-in, easy-out changes in weight, making it seem as if you have a full rack of weights with you — for a fraction of the price. Featuring multiple never before innovations, packed into an extremely durable, easy to travel with and even easier to train with product, produced to help you maximize your training and gain back the time you would have spent away from enjoying what matters to you most.