6 - 8 Deep , Twin 6 ULTRA LOW PROFILE : The Original Sleep Defense System - Waterproof / Bed Bug / Dust Mite Proof - PREMIUM Zippered Mattress Encasement & Hypoallergenic Protector - 38-Inch by 75-Inch, Twin - ULTRA-LOW PROFILE 6"

Extremely well made. Feels great under the sheet, not plastic or noisy. Was easy to put on. and i swear....i wake up much less congested so I think it's keeping whatever invisible gross stuff in the mattress, locked in.. Would buy again. and was delivered two days early.

Excellent

I am impressed with the design of this item! I was not expecting it to be as nice as it is . The material is so much better than any of the others I've purchased in the past. This is well worth the fue extra dollars it is and the zipper tie holder is very well made and I will definitely order another one for my next mattress I get soon.

We ordered these in 2013 for all of our beds as a precaution. We have moved 7 times since then and only one cover sustained damage in the moves. In 2025, my child came home from camp with bed bugs. The only mattress that had signs of activity was the mattress with the damaged cover. The remediation company was very impressed with the quality of the mattress covers. I am repurchasing a new one to cover the mattress that we are replacing.

Easy to install, have to wait to see if it lasts