I purchased SENSBODY Kang Yeonjin - I don't get the hype.

From what I read it seemed to be the next best thing. I also heard someone warn that they had sandpaper feeling inside their toy - I was too one of the unfortunate souls who had this.

I washed it several times. I think I finally got 98% of it out. My opinion post sand-paper use: Mid-tier, it's worth half the price I paid and doesn't stand out as special. I only prefer softer toys, I've tried Tomax for example but this feels like more of the same old stuff.

and I do not understand why it is so bulky given the smaller canal size.

I messaged their support last week and haven't heard anything so I wouldn't even trust them to provide support to you if you actually do need their help.