This is a set of two extension ropes for hammock whoopie slings, made from 3mm diameter Dyneema (1000kg load capacity). Each rope weighs 6.3g and is 1m long. It's a good idea to have these on hand in case the distance between trees is wide, or if the tree trunks are thick and the original ropes are not long enough! Shipping is free via "Yu-Packet Post Mini" from Kumamoto. Delivery may take a little time, and it's estimated to take about 5 days to the Kanto region from the date of shipment. Please note that the tracking status will show as "accepted" and tracking will only become available the day after the item is dropped off at the post. Feel free to ask any questions!