This is a very popular item. If you purchase this item along with other items from #at広場, we will offer a discount if you comment before purchasing. Multiple of the same item are also acceptable. Heart rate monitor belt. Please use it as a replacement. Do not use a dryer. Compatible with heart rate monitors with a terminal width of approximately 45mm. See image 2. The last image shows everything included. The heart rate monitor body and instruction manual are not included. Length: Approximately 60cm when fully contracted, and approximately 90cm when fully extended. The elastic band can stretch an additional 14cm, so theoretically, it can fit a chest circumference of up to about 104cm. Compatible with various brands (Polar, Garmin, CATEYE, Wahoo, etc.). This is not an official product. Heart Rate Chest Heart Rate Monitor Strap Chest Belt ANT+ Bluetooth Ideal for training on road bikes, cross bikes, mountain bikes, e-bikes, etc., regardless of the manufacturer (Specialized, Cannondale, Trek, Merida, Giant, Bianchi, Pinarello, Colnago, etc.), as well as for hill climbs, indoor training, cycling, leisurely rides, commuting by bicycle, Zwift, long rides, and endurance races, and gran fondos. Heart rate management is also linked to dieting, weight loss, stamina, health management, and maintaining motivation. Marathon runners, ekiden runners, sprinters, joggers, trail runners, and other sports enthusiasts can also use this if their heart rate monitor is approximately 45mm wide. Although it is a new product, due to being a foreign product, there may be minor scratches, scuffs, or fraying from the manufacturing process. Please refrain from purchasing if you are concerned. The package, box, and instruction manual are not included. It will be shipped in a simple brown envelope without using bubble wrap or other cushioning materials. Please refrain from purchasing if you are concerned or if you are particular about this. #at広場 offers a wide range of discounted products, including camping gear, sports equipment, road bike parts, bicycles, commuting items, and products recommended for those who are working from home, telecommuting, or lacking exercise due to the coronavirus pandemic. Click #at広場.