You don't usually think of ice as "bendy" or flexible - in fact, it's usually quite the opposite: ice is brittle and rigid, and is prone to fracturing and breaking (think of an ice cube shattering when you drop it on the floor).
So I'm sure you're as surprised as I was when scientists from the Zhejiang University in China developed ice so bendy and flexible that you can bend it into a nearly circular shape.
From Science Alert:
Ice doesn't always behave the way we expect, and its elasticity – or rather, lack thereof – is a perfect example. Theoretically, it should have a maximum elastic strain of around 15 percent. In the real world, the maximum elastic strain ever measured was less than 0.3 percent. The reason for this discrepancy is that ice crystals have structural imperfections that drive up their brittleness.
So a team of researchers led by nanoscientist Peizhen Xu of Zhejiang University in China sought to create ice with as few structural imperfections as possible.
...
At minus 150 degrees Celsius, they found that a microfiber 4.4 micrometers across was able to bend into a nearly circular shape, with a radius of 20 micrometers. This suggests a maximum elastic strain of 10.9 percent – much closer to the theoretical limit than previous attempts.
Even better, when the researchers released the ice, it sprang back into its previous shape.