Set of 2 (last page of the photo) - Material: Nylon - Size: Standard Size - Design: Trail Loop Compatible with Series Ultra2/Ultra/SE2/SE/10/9/8/6/5/4/3/2/1 series. Compatible with 49mm/46mm/45mm/44mm/42mm/41mm/40mm/38mm sizes. 42mm (Series 10)/41mm/40mm/38mm is suitable for wrist sizes from 140mm to 195mm. 49mm/46mm/45mm/44mm/42mm (Series 3 2 1) is suitable for wrist sizes from 158mm to 210mm (Apple Watch body not included, band only). 【Good Wearing Comfort】: This nylon sports loop band is made of flexible nylon material. Excellent texture, skin-friendly feel and feedback. Lightweight and breathable, comfortable in summer. Even in winter, wearing this band will not feel cold to the touch like a stainless steel band. Highly elastic fibers are added to the part that comes into contact with the skin, providing a natural fit without feeling tight. 【Infinitely Adjustable Length】: The simple and stylish band adopts a loop and Velcro design, allowing for stepless adjustment, so you can adjust the band to any position, making the tracker work perfectly. The Velcro design makes it very convenient to put on and take off the bracelet. 【Easy to Care For】: Just wash it with water like a regular silicone band. Only if the dirt is difficult to remove, add a small amount of detergent, wash it carefully by hand, and rinse. After that, dry it thoroughly in a well-ventilated place. 【Suitable for Various Scenes】: The simple and luxurious design can be applied to various scenes such as business, dates, shopping, outdoor sports, and vacations. In addition, it is applicable to parties, leisure, entertainment, etc. You can wear it in any situation, and both men and women can enjoy wearing it. Thank you for viewing.