CARIUMA: Men's Sienna Brown Nubuck Winter Boot

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Endless comfort, ultimate warmth. Introducing Ibira.

Built for the coldest of winter days, this boot is designed to withstand icy winds and negative temperatures. Ibira is consciously crafted with weatherproof nubuck and lined with GRS-certified shearling from toe to heel.

This style has a new tractor inspired outsole with enhanced lugs for durable traction on ice and snow. It’s made with 100% slip-resistant natural rubber for a winter boot that’s designed to take you places, no matter the conditions.
Shop the Men's IBIRA Sienna Brown Nubuck Boot
Our mission is to help restore the biodiversity and carbon-capturing potential of rainforests.
Since June 2020, we’ve committed to planting two trees for every pair of sneakers we sell. Our work starts in the Brazilian rainforest, where only 12.4% of the forest floor remains following widespread urbanization and agricultural logging. With the goal of restoring biological diversity in this essential biome, we plant over 120 tree species, based on what’s native to each site.
- Upper: Premium nubuck sourced from LWG-certified Gold Rated tanneries
- Lining: Vegan shearling, made from GRS-certified recycled materials
- Sole: Tractor-inspired, slip-resistant rubber
- Insole: Bio-based foam with vegan shearling lining
- Laces: Made with 100% rPET, with debossed metal aglets
- Construction: Vulcanized sneaker
These sneakers are final sale — no returns or exchanges can be offered on sneakers from the archive event.

For more information on our return & exchange policy, read our FAQ here.

We’ve extended our return window to 60 days! Returns and exchanges are accepted if your sneakers are:

- Unworn
- Unwashed
- In the original packaging

For more information on our return & exchange policy, read our FAQ here.

USA Men	UK	EU	BR	Foot Length (cm.)
5	4	37	35	23.3
5.5	4.5	38	36	23.8
6	5	38.5	36.5	24.2
6.5	5.5	39	37	24.6
7	6	39.5	37.5	25
7.5	6.5	40	38	25.4
8	7	40.5	38.5	25.6
8.5	7.5	41	39	25.9
9	8	41.5	39.5	26.3
9.5	8.5	42	40	26.7
10	9	43	41	27.1
10.5	9.5	43.5	41.5	27.6
11	10	44	42	28.0
11.5	10.5	45	43	28.4
12	11	45.5	43.5	28.9
12.5	11.5	46	44	29.3
13	12	47	45	29.9

Get a Pair of Sneakers, Plant 2 Trees

Nurturing the planet is a cause that’s very dear to us at Cariuma. That’s why we decided to start our own Reforestation Program in our founders’ homeland, Brazil, where the rainforests are home to an increasing number of endangered plants & animals. For every pair of sustainable sneakers purchased, we plant a pair of trees in the Brazilian rainforest to directly aid in the restoration and preservation of these natural habitats.