Mavic Ksyrium Merino Socks Special rides need special sock, & our premium high-length 15cm Mavic Merino wool socks will keep you comfortable on even the longest alpine tours. They’re made from high performance Merino wool that’s very soft & stretchy. & despite the word ‘wool’ they’re actually perfect for rides right through from spring to fall thanks to their incredible breathability. They also come with reinforced heel & toe for more cushioning, odor control & anatomical left & right fits for total support & comfort.