Materials and Care

Our Leather

KASPERI bags are made of thick full grain vegetable tanned leather. The main material is Scandinavian bull and cow leather. In some models we use also excellent yak leather sourced from Mongolia and tanned in Finland. The full-grain leather is made from the best top part of the hide. The full-grain leather is tough, has a natural organic look and ages beautifully. Because the full-grain leather is less processed and minimal coating has been used the unique features of each hide can be seen. Small marks, scars and imperfections of each hide make each KASPERI bag unique.

Sustainable Tanning

All the leathers we use are vegetable tanned with high quality environmentally safe processes, making them one finest in the world. The tanneries that KASPERI works with have over 100 years of experience in traditional leather making. The tanning process takes several weeks and involves more than 50 separate stages where special expertise and handcraft skills are called for. The tanneries have very high standards for sustainability, environmental protection and social responsibility both in raw material acquiring and manufacturing.  

Leather Care

A KASPERI bag provides good protection against weather. It doesn't let the water easily through. When it gets wet, just let it dry in normal room temperature and it is good to go. To further weatherproof your KASPERI and keep it in the best shape, treat it from time to time with wax or oil. We recommend beeswax or natural leather oils. Do not use synthetic chemicals or leather sprays. The KASPERI designed buckles are made of high grade stainless steel for durability and understated quality feel. The stainless steel buckles and other hardware are maintenance­ free.

Our Hides

Cow and Bull Hides from Tärnsjö Tannery, Sweden

The art of vegetable tanning leather is thousands of years old. Since 1873 Tärnsjö Garveri has been using these time-tested methods. Industrialization has allowed tanneries to offer standard hides at lower prices and many tanneries have chosen that path. We have not. Why?

Because the aesthetic of vegetable tanned leather is unparalleled and the patina that it develops with use over time cannot be produced any other way. It is also the only way to produce premium leather of desired quality while at the same time respecting our environment.

Yak Hides from Kokkolan Tannery, Finland

The Yak hides have exceptional tensile strength and are considered abrasive resistant. The hide has evolved to what is called ”A shelter for all seasons” with thin, light, compact, woven collagen fibres and a fine closed grain, a leather for the toughest of conditions. 

Yaks are among the largest bovids in shoulder height and it’s physiology is adapted to high altitudes, exceeding 3000 meters. It has adjusted to the climate for over thousands of years which has given its hide some very unique characteristics.