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Overall Mattress Thickness: 8" Zip-Top Mattress Cover: Tightly quilted cover utilizes thin layers of super-soft foam creating a thin but comfortable surface. The cover is zippered to allow access to all components, and can be removed to be steam or dry cleaned only. Comfort Layer: 2" convoluted foam is designed to reduce pressure points as an added layer of comfort and support. Posturization (Air Chamber): 5.75" 24 Gauge Latex Cotton Air Chamber. In 1981, we began using latex cotton air chambers and for over 25 years they have been considered the industry standard.
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For this year's list of worst design mistakes, I decided to try something new: I asked readers of my newsletter to nominate the usability problems they found the most irritating. I assumed that asking for reader input would highlight many issues that I hadn't noticed in my own user testing. This was not the case. Instead, all of the top thirty problems were covered in existing usability guidelines. Thus, when you read this year's top ten list, you'll probably say, "Yes, I've heard about this before."
Top 10 Web Design Mistakes of 2005 (Jakob Nielsen's Alertbox)
Summary: These design guidelines are excerpted from our book Homepage Usability: 50 Websites Deconstructed which contains more details, including copiously annotated screenshots of 50 homepages. While many of these guidelines can apply to web design in general, they are especially critical to follow when designing your homepage, because the stakes are so high.
113 Design Guidelines for Homepage Usability (Nielsen Norman Group)
Jakob Nielsen 's Alertbox, May 12, 2002 Summary: A company's homepage is its face to the world and the starting point for most user visits. Improving your homepage multiplies the entire website's business value, so following key guidelines for homepage usability is well worth the investment.
Home Page Design Guidelines (Jakob Nielsen's Alertbox)
