Only applicable to wepro strap replacement of Fitbit versa, versa 2 and versa Lite se smart watches, excluding smart watchesHigh quality materials: suitable for strap replacement of Fitbit versa Smartwatch and versa 2. The versa Lite se watch is made of durable and flexible elastomer. Lightweight and sweat resistant. High quality materials can prevent skin irritation. Very soft and comfortable to wearBuckle + groove design: the buckle is made of stainless steel, which is easy to assemble and adjust the size. In addition, there is a notch under the ring to hold your versa Lite se strap in place and for additional lengthAvailable in two sizes: small for 5.5-7.2-inch wrists and large for 7.2-8.7-inch wrists. The size can be adjusted with buckleMultiple choices: various colors can dress up your Fitbit versa, versa 2 and versa Lite se smart watches, and personalize your Fitbit versa watch to adapt to your mood and dress up in your daily life