Carefull Tips: Allow a week for adaptation. Start by wearing our insoles for 2-3 hours each day, gradually increg usage time. After a week, wear the insoles all day long and indulge in ultimate foot comfort. The Perfect Gift: Warm and vibrant color fusion, thoughtful pull-out ribbon, and durable gift packaging box bring you and your loved ones a delightful and practical dual experience. Ideal for gifting to husbands, wives, parents, children, and friends who suffer from flat feet, it's a heartfelt and sincere gift from you to them. Forefoot Triple Cushioning and 3D Contoured Heel Cup: Tailored for individuals with flat feet, these insoles are crafted to provide a zero-burden experience. Featuring a forefoot triple cushioning design and a shock-absorbing silicone gel pad at the heel, they effectively distribute pressure across the entire foot, alleviating strain. The 3D contoured heel cup wraps around the heel in a 360° fashion, enhancing ankle stability and continuously attenuating impacts generated during walking and physical activity to protect your ankles and ensure resistance to rotational forces on the ankle joint. Upgraded Velvet Touch with High Rebound Material: Designed for flat feet, our insoles made by environmentally friendly velvet-like material that's as soft as touching baby skin and High rebound to feel cloud comfort. Challenge 10 hours without any soreness, no fear of the pressure of standing and walking for a long time, comfortable and no foreign body sensation. Effictive Support Layout for Improved Pressure Points: Specifically designed for flat feet, our insoles incorporate a biomechanically engineered design concept. By elevating the entire inner side of the foot by 7mm, not only provide effective arch support but also offer additional arch support , effectively addressing incorrect pressure points on the arch and adjusting the center of gravity. This helps relief pain and discomfort associated with plantar fasciitis, metatarsalgia, and arthritis caused by flat feet. Multiple Sizes, Customizable Fit: Our insoles come in a variety of sizes, catering to most foot sizes. You can tailor the insole size to fit your foot shape and shoe type without compromising its functionality. Designed to offer moderate control and support for professional men's and women's work shoes and boots, they also provide comfort for everyday casual and athletic footwear. For information on insole width and shoe compatibility, please reach out to our customer support team. (Please NOTE: The XL size insoles are 31CM in length, suitable for US men's size 13 shoes. Due to insufficient space on the back of the insole, not all sizes are marked. Please understand. ).