Let's face it, buying a new mattress can be super expensive nowadays. However, sometimes you need to bite the bullet if your mattress is so uncomfortable that it's affecting your sleep. But what if there were ways to keep saving up for a new mattress while fixing your current one in the meantime?Luckily, there are two sleep products that can help: pillows and mattress toppers. The best mattress toppers are a low-cost, high-impact way to adjust firmness and extend the lifespan of ageing beds, while the best pillows can offer the right support that your mattress is struggling to still provide.That's why I've curated all the best 4th of July mattress and sleep deals for fixing every kind of mattress issue. Mattress too hard? Try the super-soft Lucid 4" Gel Memory Foam Topper. Need more support? Use an adjustable pillow to get the right pillow loft for your sleep position. Mattress too stuffy? I've got plenty of cooling pillow and bed topper deals, too. Now, let's take a look...Top 6 pillow deals for rescuing your old mattressTop 6 topper deals for rescuing your old mattressCheap mattress deals worth consideringIf you can invest a few hundred dollars in a new mattress, there are some good deals worth shopping in the 4th of July mattress sales. Here's what we recommend...DreamCloud Classic Hybrid – From $399 at DreamCloudSiena Signature Hard Foam Mattress – from $159 at SienaEgoHome Black Memory Foam – from $269 at EgoHomeLucid Memory Foam Mattress – from $172 at LucidMore sales coverageDeals tracker: The best luxury 4th of July mattress sales for every sleep position