Based on this product's specifications, here are some alternatives and similar models
Springos ACT0126 Silicone Ankle and Wrist Weights 2 x 1 kg
Summary description:
Springos ACT0126 silicone ankle and wrist weights set, totaling 2 kg. These 2 x 1 kg weights are crafted from waterproof, sweat-resistant silicone with stainless steel plate filling. Featuring an adjustable Velcro strap, they provide a secure and comfortable fit for any wrist or ankle size. Ideal for fitness training, yoga, pilates, and rehabilitation exercises to increase resistance and improve muscle tone.