Heavweight 250gsm merino long johns that provide unrivalled warmth in thermal bottoms. The Womens Mons Royale Olympus 3.0 Leggings are a season essential for any serious rider looking to shred in any and all conditions. The 250gsm merino wool construction the heaviest weight that Mons Royale produce in their base layers, making them the warmest long johns on offer.For those that like to use lightly insulated or shell salopettes, the Olympus thermal bottoms are a welcome addition, allowing you to keep all the mobility you desire without sacrificing warmth. Merino wool naturally resistant to odour, meaning you can wear these for days on end without washing, making them excellent when you just want to take one pair for a long weekend or for using day after day on season.As well as being extremely warm, merino wool also very breathable and Mons Royale have aided this breathability with mesh panels behind the knees to improve the moisture-wicking capabilities of these merino long johns.