Update (3/4): The Woot deal is now sold out, but Groupon is offering a similar promo.

Today only, and while supplies last, Woot is offering 75% off OtterBox Armor Series waterproof cases for iPhone 4/4s/5, and Samsung Galaxy S III. Each case is just $24.99 plus $5 flat rate shipping. Act fast, some colors are already sold out.

OtterBox calls the Armor Series “The toughest case ever built,” boasting protection against a 10′ drop on concrete, dust, two tons of crushing pressure and complete water submersion.

If Woot isn’t carrying the specific color combination you’re looking for it’s worth checking out Otterbox.com as they are currently offering 50% off the Armor series.

 
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Woot: One Day, One Deal.