Mattresses, especially foam models, easily trap moisture from sweat and humidity. Excess moisture can lead to mold, mildew, and premature sagging. To avoid this, try airing out your mattress in a dry, clean spot in the sun once or twice a year. While regularly airing out your mattress can help prevent damage, a mattress that’s already moist and sagging may need to be replaced. Consider Buying a New Mattress After my first run in the Structure 23, I understood why Nike refrained from categorising the shoe as a stability shoe. It possesses all the long-distance comfort features that Vomero versions before the 14th version had, such as a plush, well-fitting upper, a super durable outsole and a soft midsole with deep cushioning. I remember watching a Galen Rupp interview years ago in which he said that he has always been a “Structure guy” and does all his training in the Structure. It has only been launched in a very small number of markets in Asia and Nike has chosen to not name the foam that its midsole is made of or give its standard size weight.

Your foot sits inside the midsole and there are lateral side rails which keep your foot centred through transitions. The Structure 23 is the Structure series reimagined and I really like the direction that Nike has gone with it. If you loved the Lunarglide series, the Structure 23 also has shades of the Lunarglide (8 & 9) although the Structure 23 is much more cushioned and has a lot more outsole rubber.

Nike Air Zoom Structure 23 Price Comparison

Turning down the temperature can slightly increase the firmness of mattresses that contain memory foam. That’s because memory foam softens in response to heat and firms up in colder temperatures. While the difference may not be significant, adjusting your room temperature can be one of the easiest ways to tweak the feel of memory foam models. Air Your Mattress Out Remember when Nike led us to believe that the Structure was being discontinued because they compared the React Infinity Run to it and said that the React Infinity Run caused runners fewer injuries than the Structure 22? If you don’t want to move your mobile service to EE, you can choose to move to another provider, free of charge. No pressure, simple as that. Finally, let's consider luggage space, another area you'd think might have been compromised by this seventh generation model's slight reduction in size in post-2019 form. Actually when you raise the tailgate in the hatch version, there's a very usable 370-litre space (measured up to the parcel shelf). True, that isn't an especially noteworthy figure by period class standards, but it's not a bad showing for a car less than 4.4-metres in length. Earlier, we mentioned the Sports Tourer version's longer wheelbase; well as you'd expect, this facilitates a much greater level of capacity - 540-litres. What You Pay

My first run was 15 kilometres at an easy pace. The first thing that surprised me was how much cushion the midsole had. While putting them on and walking around in them, my feet sank down into the soft foam and I immediately knew that this was a completely different beast from previous versions. The Structure 23 is a very soft shoe: softer than the Pegasus 37, softer than the Miler and softer than the Vomero 14, making it one of the softest Nike shoes one can buy in the current lineup.Foam mattresses can include polyfoam, memory foam, or latex. They often mold to the body for exceptional pressure relief. Mattress materials and construction affect the overall firmness. Firm models are available for every type of mattress, but some are more common than others. We explore mattress types in more detail to help you decide what’s best for you. Mattress Type Previous versions felt as stiff and hard as a plank of wood but the 23 is actually fun to run in even though it is less versatile.