Crinkle-free and 100% stain resistant — last chance to save on the best waterproof mattress protector I've ever tested

A decent mattress protector is the unsung hero of your sleep set-up. It keeps the star of the show (your mattress) in pristine condition, and can come with other benefits, such as being hypoallergenic or cooling. Right now, you can snap up a queen Purple Waterproof Mattress Protector for $112 at Purple, down from $149.

That's the lowest price I've tracked it all year, which is an excellent discount on the best waterproof mattress protector we've ever tested. As well as being 100% waterproof, it's noiseless, lightweight and virtually undetectable beneath your sheets.

While I love it, the Purple protector is on the pricey side. That's why I've included a cheaper alternative from SiJo, which comes in at $60 for a queen in today's extended Cyber Monday mattress and bedding deals. Let's take a closer look at both deals:

EXTENDED CYBER MONDAY BEDDING DEALS: QUICK LINKS

• Avocado: save up to 25% on organic pillows and sheets
• Bearaby: 10% off our top eco-friendly weighted blanket
• Brooklinen: 25% off our best sateen bedsheet set
• Nest Bedding: 25% off our best pillow for side sleepers
• Marriott Bonvoy Boutiques: save up to 35% off luxury hotel pillows + bedding

Save $29

Purple Waterproof Mattress Protector (twin): was $119 now $90 at Purple

During my Purple Waterproof Mattress Protector review period, I found it to be 100% waterproof, noiseless, crinkle-free and stain-resistant, even after putting it through multiple spill, wash and dry tests. The secret is Purple's expertise in seamlessly blending the stretchy soft top-knit layer with the thermoplastic polyurethane moisture barrier. The lightweight build also makes maintenance a breeze, compared to some other protectors which can be difficult to dry after washing. It's available in seven sizes and two depths (standard and deep pocket for queen and larger sizes)). A queen standard protector is now $112 ($149) in Purple mattress sales. Benefits include a 30-night trial, 10-year warranty and free shipping.

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Same benefits but more affordable? Here's what to consider instead...

If you've invested in one of the best mattresses of the year, you'll understandably want to give it the best protection possible. While the Purple Waterproof Mattress Protector is the best protection possible, it's premium price could, understandably, be a barrier for some.

If you're looking for a decent waterproof mattress protector that doesn't break the bank, I would recommend the SiJo AiryWeight Eucalyptus Mattress Protector instead. Like the Purple, the SiJo is one of the best mattress protectors we've ever tested, thanks to its impenetrable waterproof barrier and cooling properties.

In the extended Cyber Monday sales, a queen drops to $60 from $80, which is a great price. Let's take a closer look...

Save $15

SiJo AiryWeight Eucalyptus Mattress Protector: was $60 now $45 at tomsguide.com

In my SiJo AiryWeight Eucalyptus Mattress Protector review I rated it highly as offering excellent all-round protection and comfortable sleep surface. As well as providing your mattress with a 100% waterproof barrier, it's also cooling and hypoallergenic. Crafted from breathable Tencel-Lyocell (derived from Eucalyptus), I found it to be moisture wicking pleasantly cool to sleep on. A 25% extended Cyber Monday sale takes a queen down to $60 from $80 and comes with 60-day return policy.

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