Let me start by saying that the Claphin fitted sheet is one of the softest microfiber sheets I've ever slept on. The moment I took it out of the package (which arrived intact, unlike some other reviewers' experiences), I was impressed by how silky smooth it felt against my skin.
The cooling effect is real - as someone who sleeps hot, I appreciated how breathable this sheet is. It kept me comfortable through several warm nights without making me feel sweaty or sticky.
Fit-wise, it worked perfectly on my 12-inch mattress with plenty of room to spare for deeper mattresses. The all-around elastic held securely without being too tight or leaving marks on my mattress.
Now for the not-so-great parts: The sheet is indeed thinner than I expected. While this contributes to its cooling properties, it doesn't feel as luxurious or durable as some premium sheets I've used. After several washes (following the care instructions), it's holding up well but does show slight signs of wear.
The color was another slight disappointment - my 'black' sheet looks more like a dark charcoal gray in natural light. Not a dealbreaker, but worth noting if you're particular about colors matching your decor.
As for that chemical smell some reviewers mentioned? Mine had a faint odor that disappeared completely after the first wash. No lingering smells or irritation for my sensitive skin.
Would I recommend it? If you're looking for an affordable, super-soft fitted sheet that stays cool and fits deep mattresses well - yes. But if you prefer thicker, more substantial-feeling sheets, you might want to look elsewhere or be prepared for its lightweight nature.