material ----- leather , plastic This kit includes leather tabs with holes and slits for attachment to the instrument and one black plastic slide buckle for making the strap adjustable. ★(This kit does not include a strap.) size（ Leather part）------ width 3cm（1.18in) length 8.5cm (3.34in) slide buckle fit 1.18 inches (3cm) strap. The items are shipped from South Korea. The shipping time varies from countries. ★★ standard shipping ★★ We are mainly using Korea Post Office's Small Packet Flight Service(Economy International Shipping). It has tracking number. Please note : Some country postal services do not provide on-line tracking for Small Packet Flight Service. For ex: Taiwan,Japan,China,USA, UK, France,Canada,Australia etc... So you can track your package only while it's in South Korea. * All of customers buying from me will surely have parcel with our communication in case of lost. ( redelivery,refund etc.)* ★Normally, the delivery is made within 2-3weeks after your order is shipped,The delivery may be delayed for certain some reasons. ★For US & Canada: Delivered around 14-21 Business days. ★ For Asia Countries: Delivered around 10-14 Business days. ★For Australia & New Zealand: Delivered around 14-21 Business days. ★For most European Countries: Delivered around 14-21 Business days. ★Rest of the World (most countries): Delivered around 14-30 Business days. ★★ EMS shipping ★★ EMS is the fastest and the safest delivery method. It takes around one week to arrive.