What is the opinion of Reddit about the
GOSLEEP Travel Pillow – Sleep Mask and Memory Foam Pillow That Prevents Head Bobbing and Blocks Light for Better Sleep During Road and Air Travel – Jet Black?

I bought one of these and it works surprisingly well.

I am not a fan of the space it takes up, but it really does allow me to get quite a bit shut eye, and not wake up with a bent neck.

It does not work with every plane though.