Cycling in chilly or drizzly weather? This CEROTIPOLAR thermal vest is like a secret weapon. It's a 3-layer piece: a soft fleece inside for warmth, a breathable waterproof/windproof membrane in the middle, and a quick-drying fabric on the outside. So, it blocks wind and rain while still letting sweat vapor escape to keep you from getting clammy. It's got a high collar to stop chilly drafts from going down your neck. The fit is what they call 'Club Fit' – it's snug but has stretchy side panels so you can move freely on the bike. There's a full two-way front zipper, which is genius because you can unzip it from the bottom to easily access the pockets on your cycling jersey underneath. Speaking of pockets, it has three on the back: one big cargo pocket and two smaller ones, perfect for your phone, wallet, snacks, or a lightweight layer. Throw this on over your jersey when the temperature drops or the skies look threatening.