Mountain Equipment
Mountain Equipment Cerrig Men's LS Zip T
- Weight: 4/10 How much it adds to your pack.
- Warmth: 6/10 How much the fabric insulates next to your skin. Heavier fabric is warmer and slower to dry.
Cold-weather hill days, winter walking and mountaineering: Mountain Equipment calls it the foundation of a winter layering system
- Weight
- 250 g (not stated)
- Fabric weight
- 170 g/m²
- Fibre
- Synthetic
- Merino
- 0%
Where to buy
Mountain Equipment £55 In stock. Free delivery. Free UK mainland delivery over £50 (page banner); The UK store address mountain-equipment.co.uk redirects to this one.
View at shop: Mountain EquipmentGO Outdoors £55 In stock. Delivery £3.99. Cosmos, sizes S to XXL listed in stock including M. £3.99 standard delivery, free from £80.
View at shop: GO OutdoorsCotswold Outdoor £55 In stock. Delivery £6.95.
View at shop: Cotswold OutdoorPrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Weight
From maker's figures 4/10How much it adds to your pack. 4: A bit below average.
Mountain Equipment's page gives 250 g and does not say which size. 250 g is in the 240–279 g band, the 2 band. GO Outdoors repeats 250 g (approx.).
Warmth
From maker's figures 6/10How much the fabric insulates next to your skin. Heavier fabric is warmer and slower to dry. 6: A bit better than average.
Mountain Equipment gives the fabric at 170 g/m². 170 g/m² is in the 150–189 g/m² band, the 3 band. Mountain Equipment calls it a winter-weight tee.
In short
Good for
- Cold-weather hill days, winter walking and mountaineering: Mountain Equipment calls it the foundation of a winter layering system
- Climbing, ski touring and trekking: slim fit that sits under other layers
- Wild camps in autumn and winter as the layer next to the skin, with an insulated jacket over it
Strengths
- 170 g/m² fabric (score 6): thicker than summer-weight tops
- Slim fit, flatlocked seams and a YKK front zip for venting, per Mountain Equipment
Weaknesses
- 250 g (size not stated) is heavy for a base layer (score 4)
- Mountain Equipment's page gives no fibre percentages: GO Outdoors and Cotswold Outdoor list 92% polyester and 8% elastane
- No independent hands-on test found, so comfort, odour and durability are estimates, not reviewed scores
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.
ShowHide sources (3)
- Mountain Equipment: Cerrig Men's LS Zip T (170 g/m² jacquard knit, 250 g, £55, product code ME-007462)
- GO Outdoors: Mountain Equipment Men's Cerrig LS Zip-T, Cosmos (92% polyester, 8% elastane, 250 g approx., price and stock; size M barcode matches Mountain Equipment's Cosmos M)
- Cotswold Outdoor: Mountain Equipment Mens Cerrig Long Sleeve Zip Base Layer Top, Drab Green (92% recycled polyester, 8% elastane; price and stock)