I admit I had not just realised how much mud (and grass seeds) a pair of lightweight ankle gaiters would keep out of your shoes/socks. Della wore a pair of Sea to Summit ones on our recent South Coast Track hike (See http://www.theultralighthiker.com/westies-hut/ & ff) and managed to retain completely clean socks/shoes.
Since then we have received a pair of MLD’s ‘Superlight Gaiters’ (http://www.mountainlaureldesigns.com/shop/product_info.php?cPath=37&products_id=114) @ 46 grams per pair. I doubt there will be many occasions these will be off my feet. I hardly ever go anywhere without their ‘Rain Mitts’ @ 40 grams a pair, a sure way to keep your pinkies dry and warm.
Sea to Summit have a slightly heavier version here: http://www.seatosummit.com.au/products/gaiters/tumbleweed-gaiters/?ref=outdoor See also: http://www.theultralighthiker.com/ultralight-mitts-and-gaiters/i