$9.99 (Reg.$21.99) for Waterproof Mattress Protector @Amazon

Amazon has LRKC Waterproof Mattress Protector 11 x 9 x 2.5 on sale for $9.99. 

Price:            $21.99
Discount:      $12.00 via coupon code MATRESS999
Shipping:      Free Shipping on orders over $25 or with Amazon Prime
Final Price:    $21.99 - $12.00 = $9.99

[Click Here]

• Hypoallergenic cotton terry surface with noiseless polyurethane backing protects against allergens like bedbugs and dust mites and is 100% waterproof to protect against bacteria, perspiration, bodily fluids, and spills.
• Soft, breathable fabric stays comfortable throughout the night and will not change the firmness and feel of your mattress. Material: 35% Cotton / 65% Polyester (surface); 100% polyurethane (backing).
• Fully-elasticized fitted sheet style protector features deep pockets for a smooth, secure fit on mattress depths from 5" to 18" and will not slide or fall off.
• This mattress pad cover is easy to care, the crinkle-free protector can be machine washed and dried on low heat.
• Vinyl-free: Safe for children and pets.