BackCountry.com:

The best advice we can give about putting stakes into sand and snow is dont do it. The Mountain Hardwear Snow and Sand Anchor is a much better option. Fill the pocket with sand or snow and bury it and you now have a bombproof anchor that wont pull out at the first hint of wind. Set of 4.

USOutdoor.com:

Mountain Hardwear Snow and Sand Tent AnchorFounding Mountain Hardwear was the team's first demonstration of radical thinking; the company bet on experience and passion for innovative, technologically advanced products to bring together a product line within 90 days. Mountain Hardwear has always focused on bringing radical thinking to the gear we make. Features:Not to be used as an anchor for climbing Anchor accepts snow, sand and rocks or can be buried Edges reinforced with webbing Lightweight, compact and durable