I bought the 160cm / 2-Way Tricot for my Dakimakura Inner Pillow (Kumochi filling 160cm 4.0 - 4.4 kg) from dakimakuri.com and it fits PERFECTLY. While it did take 1.5 months for it arrive...Mitgard was very, very prompt, kind, and helpful the couple of times I messaged customer service to ask about the shipping status. As I understand, this was due to recent/unfortunate troubles in China. Anyway, the pillowcase did arrive undamaged and the quality of it is exceptionally high! The print of Nagatoro is incredibly high resolution on both sides and the 2-way tricot feels smooth, luxurious, and supple upon touching it. Serious upgrade for my bare dakimakura pillow! I was very careful when inserting the pillow into the case but it seems that the material of the pillowcase is very durable and should not rip easily at all. I found the simplest way of inserting the pillow into the case is by bunching the pillowcase up, placing the pillow into the opening, standing up while holding the pillow and pillowcase, then gently pulling upward on the pillowcase to smoothly swallow up the pillow. It takes a little wriggling to get it going at first but nothing too difficult or worrisome at all. The fit is seriously perfect, I'm beyond impressed!