Skip to content

Plus-Size Outdoor Adventure Clothing

Cart

Your cart is empty

Plus Size Siberia Collection

Our Siberia merino wool tops and thermal leggings are a store staple and crowd favourite. Stretchy, comfortable, 100% Australian merino wool in plus sizes 18 to 7XL, there's lot's to love.

Sort by

4 products

Women’s XTM Siberia Merino Wool Plus Size Thermal Top, long sleeve base layer for cold weather available in XL to 7XL, hero image.  plus-size fog pink grey kalamata oliveWomen’s XTM Siberia Merino Wool Plus Size Thermal Top in black, long sleeve base layer for cold weather, available in XL to 7XL. plus-size
(74)
Warm plus-size merino leggings in black and mid grey marle design plus size womens women's base layerWarm plus-size merino wool leggings in black pants design plus size womens women's base layer
(38)
Three plus size  men wearing long-sleeve merino wool thermal underwear shirts in black, dark gray, and olive green, standing against a white background with a 'BIGGEST FIT.' graphic in the top right.XTM Siberia Merino Wool plus-size plus size Unisex Plus Size Thermal Top showing the fit in black color options. Mens men's base layer
(74)
XTM Siberia Merino Wool Unisex Plus Size Thermal Pants hero image black plus-size base layer mens men'sFull body profile view of a man with gray hair wearing black winter boots and XTM Siberia Merino Wool Unisex Plus Size Thermal Pants. black plus-size base layer mens men's
You may also like
XTM Traverse Merino Wool Women's Long Sleeve Shirt Black Sizes 24 - 30A black long-sleeve crewneck shirt with a small tonal square logo on the left chest and a small brand tag near the bottom hem, displayed on a clean white background.
(6)
XTM Trail Merino Wool Unisex Plus Size T-Shirt in Grey, breathable merino base layer available in sizes 4XL–7XL.Two plus size people standing on a rocky outcrop with text indicating their clothing sizes.
(3)
Sold outPlus size woman wearing the XTM Tirari women's plus-size UPF 50+ sun hoodie in Jade with the hood up on a coastal trailXTM Tirari women's plus-size UPF 50+ sun hoodie in Jade, flat lay
Black convertible gloves shown in half-mitten and full-mitten forms with a  Northern Lights photography mountain background.Pair of black mittens on a white background with a removable hooded design to convert to fingerless
Sold outModel wearing the XTM Tea Tree women's plus-size hemp hiking shirt in Basalt, front viewXTM Tea Tree women's plus-size hemp hiking shirt in Basalt, flat lay
XTM Stanley Plus Size Fleece Jacket Sizes 2XL - 6XLXTM Stanley Plus Size Fleece Jacket Sizes 2XL - 6XL
(0)
Sold outPlus size man and woman wearing the XTM Simpson plus-size UPF 50+ sun hoodie in Ultimate GreyXTM Simpson plus-size UPF 50+ sun hoodie in Ultimate Grey, flat lay
Sold outA size 20 woman wearing a slate blue ski jacket with a brown fur-trimmed hood, black goggles, beige gloves, and black pants, photographed against a solid white background.A person viewed from the back wearing a blue winter parka with a brown faux-fur trimmed hood, black snow pants, and a patterned knit beanie with a pom-pom, against a plain white background.
A plus size woman wearing a black XTM quillted snow jacket with a brown faux-fur trimmed hood, a knit beanie, and gloves, shown against a plain white background.A close-up of a size 22 woman wearing a black winter puffer jacket with a brown faux-fur trimmed hood and a knit beanie. The jacket has a visible 'XTm' logo patch on the chest.