Alutherm Merino Insoles For centuries, Europeans have relied on the warming properties of merino wool. The merino sheep originally comes from North Africa and reached Europe in the course of the Middle Ages, where it quickly became one of the most important suppliers of wool. Merino wool keeps the body warm for a long time and is of course one of the naturally renewable raw materials. Features that discerning consumers today can expect from a top product like our merino wool insole. Shoe insoles on the latest technology Perfect insoles made of natural merino wool felt, only the best for your feet! Layout: aluminium thermal layer 1mm, felt thickness approx. 4mm the rest With these insoles, you can easily take the foot warmth of summer with you into autumn and winter. Cold and damp days in particular are the guarantee for ground cold. It is helpful to protect your feet from the increasing cold. Lambskin insoles improve the walking experience and you can always enjoy the feeling of warm feet. 95% Merino Felt 5% Alutherm Layer