They are very flexible, smooth and most importantly, they are comfortable to wear. Both of them love the thermal straps and love to watch the colours changes! The straps are made from a silicon material. The Pink strap set comes with a Purple thermal strap that changes to a blue colour whilst the Blue strap set comes with a Red thermal strap that changes to an orange colour. We have received two different sets of watches for Ms C and Mr K. This smartwatch range comes with four different colour Watch Bands, two of which change colour through body heat, available to help make each watch unique to the user. It has a micro SD card slot giving users the option to add up to 32 GB of memory. It features a customisable interface, 256 MB of internal memory, a camera, new photo filters, video recorder and Bluetooth® 3.0 connectivity. Children can now enjoy this innovative product in a multitude of ways including gaming, education and social communication through the multifunctional touchscreen. Kurio Watch 2.0 is an updated version of the original Kurio Watch for children and is suitable for aged six and above.