Id prefer to rate 3.5 but the price point gained a 4.. The average adult hiker would need 2. It inflates to around 8cm height but.. It will work if one uses a jumper underneath it to offer the extra height needed to avoid a sore neck. The valve is plastic and seem reliable and I have no issue when the valve is capped..it should be fine. The material is somewhat thin 1.2mm approx..but it's not a chair. It is ok for the price and we are talking mid range gamble. It's a bit low.. It's a bit thin.. But hey ... It will work with a bit of extra packing. It has a good small reliable carry sack.
This was the last piece of camping equipment I ordered from Amazon (by several days) and it was the first to arrive. I ordered mine on Saturday and it was received in Melbourne on Tuesday. Great :)
I like the valve toggle button that allows it to fill only or to vent. Easy for both inflating and deflating. The material is lovely. A kind of soft flock. It is very light 100g with tote bag. About 85g on its own.
I am a side sleeper with wide shoulders so I bought this pillow because it was one of the thickest available. They quote 10.2mm. In fact it is higher than that (11.5 cm) at the sides (unloaded) - but you don't sleep at the sides. The middle portion, where you lie your head, is 9.5 cm unloaded and 7 cm with load. It is still a bit low for me but super comfy so I will use it - probably with something under it to raise it a little.
It is easy to inflate and can be used as a sleeping pillow but I found it is also very useful as a back pillow when flying. It’s compactness makes it great for travel when space is an issue. I gave highly recommended it to fellow travellers.
I have found this to be a reliable and good piece of equipment. I use a T-shirt on the outside to stop it from slipping off the mat and it works a treat. Lightweight and comfortable. Would highly recommend.