PORTABLE DESIGN : This collapsible roller closes into itself with interlocking technology that allows it to perfectly align after every use. Unlike the traditional bulky foam roller, this unique design was built to create easy storage and portability. Its expandable capabilities only increases the functionality of this fitness tool. STURDY AND DURABLE : When this roller is collapsed, it is small as 5.2 inches. When it is open to its fullest size, it can reach up 13 inch and endure up to 280 pounds of pressure. MULTIFUNCTIONAL USE : Made with high quality and environmental-friendly material, this tool has a deep tissue pressure to target muscle pain, aches, and soreness post workout, while also offering an increase in blood flow and circulation. This tool may also treat tired muscles, increase performance and flexibility, and help with stretching tight muscles in the legs, back, feet, and arms. COMPARABLE TO A MASSAGE : The unique design of this rolling is meant to emulate finger pressu PERFECT GIFT FOR ALL : This cylinder expansion roller is loved by runners, cyclists, personal trainers, swimmers, athletes, and those doing a daily fitness routine. It may be used alongside most exercises, yoga, pilates, sports, cycling during business or leisure travel for an extra session of at-home physical therapy. Great birthday, anniversary present for workout enthusiast wife or fitness guru husband! Fitster Adjustable Back Roller - Made from Environmentally Friendly material, Strong and wear-resistant - Suitable for upper and lower back, hamstrings, quadriceps, glutes and calves.