The Recovery Slope Sandals from Blackroll promotes both active (when walking) and passive (when standing) regeneration. The sole is lowered 3.7° toward the heel and also runs in a rounded rocker profile across the entire bottom. 

Sizes:
S = 38.5-40 (26.18 × 10.62 × 10.22 cm) 
M = 40.5-42 (27.47 × 11.03 × 10.36 cm)
L = 42.5-44 (28.59 × 11.72 × 10.53 cm)
XL = 44.5-46 (29.89 × 12.11 × 10.79 cm)

Weight:
S = 484 g
M = 522 g
L = 582 g
XL = 652 g

Information on EU Regulation GPSR 

Name of the manufacturer: Blackroll AG
Postal address of the manufacturer: Hauptstrasse 17, 8598 Bottighofen, CH
Electronic address of the manufacturer: support@blackroll.com

Importer's name: WSKV Oederan GmbH
Importer's postal address: Gewerbestraße 1, 09569 Oederan, DE
Importer's electronic address:  info@wsvk.de