The Fuwa Pote Endless Push Onahole by Ride Japan is about as soft and floppy as they come, allowing you to fully manipulate and massage the masturbator sleeve into the shape and angle you want. The inner hole is a delightful nest of varying nubs, designed with one main curve and a "rib" towards the far end that creates a final rub on your glans. If length and soft texture is what you want, you've come to the right place.
The Fuwa Pote Endless Push Onahole features: