The men's Karhu Synchron 2.5 is a premium cushion daily trainer for neutral or mid to late-stage overpronators. The Synchron 2.5 has a soft and stable ride that serves up the steadiest “roll” in KARHU’S running collection.

Updates to the Synchron 2.5 include a softer heel collar made of Lycra for better fit and on-foot comfort. Premium IdealKnit mesh supplemented with glue print overlays for a sleek, modern appearance, and additional rubber coverage on the outsole to protect the exposed Fulcrum. All of which help to produce a soft, flexible, and stable ride with a smooth, supportive transition through the gait cycle. The Synchron 2.5 is ideal for longer runs and long days on foot.

The Synchron 2.5 is also available in a wide fit, KARHU calls this High Volume (HiVo).

Technologies Karhu Synchron 2.5:
-Anatomical lacing system
-Full-length Fulcrum
-IdealKnit
-Ortix Fit
-AeroFoam Nova midsole
-M-Lock
-Open-cell foam insole
-Lycra heel collar

Weight US10: 369g / 13 oz
Heel-to-toe drop: 8mm

Returns and Refunds 

We accept returns of all items within 15 days of receiving the order with the right to full refund minus a return fee of £5.00. A return label by Royal Mail is included in your shipment and a refund for the amount you paid for the returning item, minus a £5.00 shipping fee per return will be charged. If you are missing the return label or need to make a second return, please email our Customer service department at customerserviceEU@karhu.com to provide you a new return label.
 
We accept returns of all items within 15 days of receiving the order with the right to full refund of the product minus a £5.00 shipping fee per return.

Your return will be accepted if the goods are returned in the same condition as when you received the order. If the item has been used, damaged, washed, altered or missing tags/labels (for apparel), we are entitled by law to charge you a fee for the depreciation of the item. 

We will process your return and issue a refund within maximum of 30 days. Refunds will be issued via the original method of payment.

Exchanges

We don't do exchanges at Karhu at the moment. If you would like to change your item for a different color or size, please return your item and place a new order. 

Size guide