I bought this, but I haven't used it, so I'm selling it. It's in almost new condition. 【Pinpoint pressure on the deep muscles of the neck, shoulders, and back: Precisely targets with a two-ball structure】 The TriggerPoint MB2 massage ball is a self-care tool with a unique structure of two 6.5cm diameter balls connected, allowing you to apply pinpoint pressure to the deep muscles of the neck, shoulders, and back. It's particularly effective at stimulating areas that are difficult to reach with a foam roller, such as the inner side of the shoulder blades, the erector spinae muscles, and around the cervical spine. It efficiently loosens fascial adhesions, contributing to improved flexibility, range of motion, and relief from chronic stiffness. It's ideal for those concerned about neck tightness and shoulder heaviness. 【Two-stage width adjustment function allows for care tailored to the area: Also supports neck, shoulders, chest, lower back, and buttocks】 The MB2 features a structure that allows you to adjust the distance between the two balls. Narrowing the distance allows you to target the fine muscles of the neck and shoulders, while widening it allows you to address a wide range of fascia, such as the chest, lower back, and buttocks. With one tool that can be used on multiple areas, there's no need to switch tools for different areas, enabling efficient self-care. It's especially recommended for users who want to care for the line from the neck to the back all at once or who aim to improve their posture. 【Lightweight and compact for convenient portability】 The MB2 has a compact design with a diameter of 6.5cm and a weight of approximately 93g, making it easy to store in a bag or pouch. The MB2 is a model specifically designed for neck, shoulder, and back care. It features a design based on scientific evidence and a track record of use in professional settings. 【Durable EVA material used: Non-slip and deformation-resistant design】 The MB2 uses durable EVA foam material. It's not as soft as a tennis ball, but has a firm hardness that allows it to reach deep tissues. It's resistant to deformation and maintains its performance even after long-term use, making it ideal for daily self-massage routines. The surface has a non-slip stripe structure for excellent stability during use. It also uses a material that is resistant to dirt, making it hygienic to use. Weighing approximately 93g, it's lightweight and easy to hold, making it easy to handle even for beginners.