Icebreaker Merino 200 Oasis LS Crew vs Smartwool Merino 150 Base Layer Short Sleeve
Weight and specs compared for 2026 — and which one to choose.
100% merino wool long sleeve base layer with 200g/m² fabric weight. Flatlock seams, underarm gusset, and offset shoulder seams. Men's medium.
Check price Full details →Lightweight 150g/m² merino wool short-sleeve base layer with natural odor resistance, ideal for warm-weather hiking and backpacking.
Check price Full details →Icebreaker Merino 200 Oasis LS Crew vs Smartwool Merino 150 Base Layer Short Sleeve: which should you buy?
If saving weight is your priority, the Smartwool Merino 150 Base Layer Short Sleeve wins — at 133 g it is 87 g (40%) lighter than the Icebreaker Merino 200 Oasis LS Crew (220 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest clothing - base layer page, or browse the full gear weight database.