Red-brown dungarees by Recolution made from sturdy organic cotton fabric with adjustable straps, several pockets and wide legs. 
Bought from RRRevolve for CHF 139
I have only worn the trousers very little, as they unfortunately became too tight for me, so they are still like new. 
Size XS (the length fits perfectly at my height of 165 cm)

Description (+2 wearing photos) from RRRevolve: Dungarees were invented to make you feel good: you can pull them out of the wardrobe in the semi-darkness of the morning, quickly slip them on and be dressed in a casual, timeless way! Combine the BEAUMONTIA dungarees by recolution with a blouse. You already have an outfit for the office or a cinema date. As soon as winter really hits and the icy cold creeps up your arms … thanks to the adjustable straps, you can pull a thick hoodie or knitted jumper underneath.

The legs of these sustainably produced dungarees are cut wide: this gives you plenty of freedom of movement and the option of wearing leggings underneath. For double autumn cosiness!

80% GOTS-certified organic cotton, 20% recycled cotton
Dungarees made from organic cotton and recycled cotton
Adjustable straps
Side pockets and back pockets
Vegan – certified by PETA
Fairly and sustainably made in Turkey
Recolution places great importance on sustainability throughout the entire production chain. These trousers are GOTS-certified, from cultivation through to the finished product. This means that the production companies Recolution works with are also GOTS-certified and operate sustainably.