Brand new, unopened. Shipping will be via Yu-Packet Mini. "Arch Support for the Sole" is designed with an arch shape based on research of foot structure, using highly elastic EBA material to lift the muscles of the sole and apply direct pressure to the arch, gently supporting it. This helps to balance the entire foot, correct posture while walking, and reduce the burden on the knees and lower back. [Improvement of Foot Problems] This flat foot support addresses foot problems such as: ● Tired feet when walking due to flat feet ● Loss of arch ● Plantar fasciitis ● Flat feet, knock knees, or bow legs ● Tired feet from standing work ● Difficulty standing for long periods. Just one set creates an arch in the sole, gently secures it to the bottom of the foot, and cushions the impact of walking, softly supporting unbearable foot fatigue and pain, and thoroughly caring for all kinds of foot problems. [Excellent Breathability] The thin, high-quality nylon material is absorbent and breathable, preventing foot odor. Because it's thin, you can wear it comfortably with shoes. It can be worn directly on bare feet for daily use, yoga, or jogging, and can also be worn with socks, stockings, or shoes. [Easy to Attach] L and R are marked on the back, so you won't get the right and left mixed up. It can be worn directly on bare feet without discomfort. Because it's the type you attach to your own feet, you don't need to switch it out depending on the shoes you wear that day. It can be used indoors with slippers or barefoot. It's useful in various situations such as walking, commuting to work or school, standing work, housework like cleaning and cooking, yoga, running, sports, and mountain climbing. [Washable and Hygienic] The sole support absorbs and releases sweat and moisture, keeping your soles comfortable. Also, it can be washed after use, making it easy to care for and keep clean. Hand washing is recommended. If washing in a washing machine, put it in a laundry net and wash on a delicate cycle.