Outgrown pair that were used by my son for three of four trips before being outgrown: minimal wear and no stink. Double lined; probably Beaver I think as most of our wetsocks seem to be Beaver. Wetsocks seem to start at size 6 online: ?14.50 in Bernies online and ?16.95 in Caving Supplies online, both excluding postage and packing. Say ?10 plus postage which won't be much in a second hand Jiffy envelope?