Here's an old school 1985 vintage sneaker ad for the Karhu Synchron model of running shoes. Karhu brought these back and they're available on their site over at https://karhu.com.
Ad info is below:
Europes Best
Karhu Synchron, a market leader in Scandinavia, winner of independent shoe tests in Germany and Austria. Now available in the United States. The Karhu Synchron features uncompromised durability, maximum directional stability, excellent shock absorption and comfortable support.
Our best All Terrain training shoe featuring
Air Cushion Shock Absorption
Double Fibreglass heel counter
Anatomical Insole
Synchron lacing Available in high tops
Call for Dealer information:
Karhu
55 Green Mountain Drive
South Burlington, VT 05401
800-222-1833
KARHU
'Top Ranking, 1985 Stiftung Markentest, 1985 Konsument