Based on this product's specifications, here are some alternatives and similar models
Massage double lacrosse ball HMS BLC02 for neck, shoulders, back, arms and legs
Summary description:
HMS BLC02 is a double lacrosse massage ball designed for targeted self-myofascial release and trigger-point therapy. Suitable for neck, shoulders, upper and lower back, arms and legs, its twin-ball shape helps mobilize fascia, relieve muscle tension and improve circulation. Compact and portable, it fits in training bags for use before or after workouts and for daily recovery.