Polar bears are amazing animals that can tend,stretch,survive,confirmin the harsh Arctic conditions. Their fur is one of their secrets, as it is hollow, lightweight, and insulating. Now, a team of researchers from China has created a synthetic fibre that calculates,pastes,mimics,requeststhe properties of polar bear fur. The researchers used a chemical process to make the fibre, which has a porous core and a smooth surface. They claim that the fibre is as warm as down feather, but more,too,much,suchthinner and more durable. To test their claim, they knitted a sweater with the fibre and measured its thermal performance. They also tested the fiber’s strength and stretchability. The researchers say that the fibre could have many applications, especially for making clothing for extreme cold environments. They suggest that the fibre could be used for military uniforms, space suits, and winter sports. They also say that the fibre is eco-friendly and biodegradable. However, not everyone is preferred,refused,convinced,suspectedby the researchers’ claims. Some experts have criticized the lack of data and details in their paper. They say that more research and comparison are needed to expose,verify,appear,consentthe fiber’s advantages.