Rittervest Size & Fit (in inches)
Size |
Chest |
Waist |
| Small | 40 | 29 - 30 |
| Medium | 42 | 31 - 33 |
| Large | 44.5 | 34 - 36 |
| X–Large | 47.5 | 38 - 40 |
| XX–Large | 50.5 | 40 - 42 |
| XXX-Large | 53.5 | 44 - 46 |
Socks Sizing - In US
Size (US) |
US Size |
|
Standard |
8-11 |
$349 USD Size Guide
Rittervest Size & Fit (in inches)
Size |
Chest |
Waist |
| Small | 40 | 29 - 30 |
| Medium | 42 | 31 - 33 |
| Large | 44.5 | 34 - 36 |
| X–Large | 47.5 | 38 - 40 |
| XX–Large | 50.5 | 40 - 42 |
| XXX-Large | 53.5 | 44 - 46 |
Socks Sizing - In US
Size (US) |
US Size |
|
Standard |
8-11 |
As seen in Forbes·GQ·Insider·Huckberry
Think of this vest as your substitute for your sport coat or suit. It's thoughtfully constructed with the finest Alpaca and Merino wools from Peru - natural fibers that exhibit superior thermoregulating properties - keeping you warm and dry. While the tailored fit is perfect for your more formal 'business casual' settings, it's also extremely breathable, allowing your body to adapt to climates quickly and comfortably.
The Rittervest, 20 seconds. Warmer than wool at half the weight.
Complete the layer: Alpaca Calf Socks 3-pack
Alpaca-blend, no itch. $87 · ships free with the vest.
See the socksYes — order your usual shirt size. The fit is tailored, not boxy: sized to layer over a dress shirt or a tee, under a jacket if you need one. Between sizes? Size up if you'll wear it over sweaters, down if mostly over shirts. Free 30-day returns and exchanges either way.
No. The fabric is a superfine alpaca-and-merino blend (34% alpaca, 33% merino, 33% nylon for durability) with a hand-feel close to cashmere — soft against skin, and naturally thermoregulating: warm on the platform, not sweaty in the office.
It's the piece Forbes called "a wardrobe staple for the modern working man." Clean lines, no logos, hidden zip pockets — it sits over an oxford or under a blazer as easily as over a tee at the weekend.
Two hidden zippered hip pockets, open hand pockets, and an interior pocket for phone, keys or cards. The front zip is a two-way (double-pull) zip so you can vent from the bottom when seated.
Rarely — the fabric is stain, water and wrinkle resistant and naturally antimicrobial. When you do: cold hand wash or wool cycle, lay flat to dry, no tumble.
Ships from the US within 1–2 business days; free domestic shipping on the vest. 30-day returns and free US size exchanges. Made in Peru from upcycled alpaca and merino.
A clear comparison of breathability, softness, durability, and versatility across vest styles.
| Alpaca™ | Fleece | Shearling | Puffer | |
|---|---|---|---|---|
| Breathability | ✓ Naturally thermoregulating | × Traps heat and moisture | × Heavy, non-breathable | × Synthetic insulation |
| Softness | ✓ Luxuriously soft, cashmere-like feel | × Can feel synthetic or rough | × Soft but bulky | × Feels synthetic |
| Sustainability | ✓ Upcycled natural fibers | × Plastic-based, unsustainable | × Typically not eco-friendly | × Synthetic, non-biodegradable |
| Weight | ✓ Lightweight, ideal for layering | ✓ Lightweight but less warm | × Heavy and bulky | ✓ Lightweight but bulky |
| Durability | ✓ Resistant to pilling and stains | × Prone to wear and tear | ✓ Durable but high maintenance | × Prone to wear and tears |
| Versatility | ✓ Suitable for formal, casual, and outdoor wear | × Casual use only | ✓ Primarily casual | × Seasonal use only |
Eco-friendly
Socially Responsible
Water Resistant
Soft as Cashmere
Warm & Breathable
