Fizfelt’s key fob features rounded corners and a nickel grommet and key ring.
Filzfelt has a great write up on felt:
Wool felt is an ecological, sustainable, and renewable material and due to its high quality has an innate durability and timelessness. FilzFelt sells 100% wool felt imported from Germany and aims to promote high quality design and permanence in its materials and products. Go sheep!
Even though the methods to produce wool felt have been refined over the centuries, the manufacturing principle and the basic raw material have remained unchanged. Sheep’s wool is cleaned, carded, and the fibers aligned into batts. It is then compacted and joined by moisture, heat, and agitation until a homogeneous fabric is formed – wool felt. The material is naturally moisture resistant, self-extinguishing, available in lightfast and saliva-resistant colors, and provides thermal and acoustic insulation.