Reiff

Reiff Men's Long Sleeve Shirt Gregor, 70% Merino Wool & 30% Silk

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Reiff Men's Long Sleeve Shirt Gregor, 70% Merino Wool & 30% Silk
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Description

Reiff · Men's Merino Wool Shirt

Men's Long Sleeve Shirt Gregor

70% merino wool, 30% silk. A medium-weight, temperature-regulating shirt for year-round standalone wear or layering. German-made, naturally breathable, and ideal for sensitive skin.

The Maker

Reiff: German Merino Since 1950

Reiff manufactures fine merino and wool-silk knitwear in the Swabian Alps region of Germany, where the company has been family-owned for three generations. Wool is sourced from mulesing-free organic farms in Patagonia, then washed, spun, dyed, and knitted entirely in Germany—a supply chain designed for quality and transparency.

The Gregor is Reiff's signature men's base layer: lightweight, refined, and built for serious sensitivity to conventional synthetics. It's the piece you reach for when you want natural fiber performance without the bulk.

When to Wear

Year-Round Standalone Wear & Sensitive Skin

Spring through autumn: Wear as a standalone shirt. The medium-weight merino/silk blend is warm enough for cool mornings and transitions seamlessly as temperatures shift. Add an outer layer (jacket, cardigan) as needed.

Winter: Ideal for layering with a light jacket or sweater, but also performs standalone on mild winter days (45–55°F) with a windproof outer layer. The spacer-knit construction and medium weight provide genuine insulation.

Summer: In cool or air-conditioned environments, or as a travel shirt where you need temperature regulation without weight. Merino's moisture-wicking prevents clammy feel even in moderate warmth.

All year for sensitive skin: If you react to synthetic base layers or conventional cotton, the Gregor's fine merino (17–19 microns) is one of the gentlest next-to-skin options. Silk softens the hand further and adds a subtle sheen that feels refined against skin.

Merino regulates, not just insulates
Fine merino is naturally temperature-regulating and moisture-wicking—it adapts to your body rather than trapping heat. Wear it solo in mild weather, add a layer in cold, peel back if you warm up during activity. This is genuinely year-round, do-it-all fabric.
Fiber & Craft

Materials & Construction

Fiber Composition: 70% organic merino virgin wool (from certified organic farms, kbT standard) / 30% silk

Knit Construction: Spacer knit—the wool and silk face inward as a soft, brushed interior; silk sheen on the outside. This two-layer approach traps warm air without weight and feels luxurious against skin.

Certifications: GOTS-certified organic merino wool [Verify: kbT and/or IVN BEST certification for this specific SKU]

Manufacturing: Made in Germany, Swabian Alps region

Fabric Weight: [Verify GSM from manufacturer or authorized retailer—retailer sources must be flagged]

Organic Merino Wool (70%)
Fine micron count (17–19μ) sourced from mulesing-free Patagonian farms. Naturally temperature-regulating, moisture-wicking, odor-resistant. Soft enough for sensitive skin when micron count is this fine.
Silk (30%)
Adds softness, subtle sheen, and breathability. Silk blended with merino reduces itchiness and creates a refined, durable hand feel. Ideal for all-day wear as a standalone shirt.
Medium-Weight Spacer Knit
Engineered hollow-fiber knit that traps air for warmth while remaining breathable. Inward-facing brushed pile softens against skin; outward silk finish adds polish. Warm enough to wear standalone in spring, fall, and mild winter.
No Harmful Finishes
GOTS-certified means no chemical treatments, heavy-metal dyes, or synthetic softeners. Dyes are eco-friendly and traceable. What you wear is pure fiber.
What It Does

Key Features

Temperature-Regulating
Merino naturally adapts to your body's warmth, keeping you dry in exertion and cool in warmer conditions. Layer it; peel it off—it performs across seasons.
Odor-Resistant
Merino resists bacterial growth naturally. This shirt rarely needs washing—airing between wears often restores freshness.
Fine & Soft
17–19 micron merino is meaningfully softer than coarse wool. Silk deepens the softness. If you've had wool-sensitivity issues, this is the gentlest merino option to test.
Medium Weight, Versatile
Substantial enough to wear standalone across seasons, yet breathable enough to layer if needed. Merino/silk blend avoids the stiffness of heavier knits while providing real warmth.
Made in Germany
Three generations of Reiff craftsmanship. Quality control at every step. Accountability and transparency you can trace.
GOTS & kbT Certified
Certified organic fiber from certified organic livestock farming. No pesticides, no mulesing, no synthetic dyes. Ethical from farm to finished garment.
Fit & Sizing

Size Chart

Reiff uses European sizing (EU 46/48, EU 50/52, etc.), which runs slightly slim. If you're between sizes or typically wear a medium-to-loose fit in US brands, size up.

EU Size Typical Fit Chest Width (cm)
46/48 (Small) Slim fit ~48–52
50/52 (Medium) Regular fit ~54–58
54/56 (Large) Regular to loose ~60–64
58/60 (X-Large) Loose fit ~66–70

How to measure: Lay the shirt flat. Measure chest width from armpit to armpit, then double. Compare to the chart. Sleeves are standard length for each size; if you have unusually long arms, verify with the size chart before ordering.

The Real Talk

Who It Works For & What to Know

Best For
Men with sensitive skin, eczema, or a history of reaction to synthetics who want to try natural fiber. Anyone seeking a standalone shirt that performs year-round without needing a prescribed wardrobe. Men who prioritize refined aesthetics (silk sheen, refined cut) over industrial performance. Anyone seeking a German-made, ethically traced alternative to mass-market thermal wear or conventional cotton basics.
Trade-Offs
Care commitment: Merino and silk require hand wash in cold water with wool-specific detergent. No hot water, no tumble drying, no agitation. If you're accustomed to throwing base layers in the washing machine, this is a shift. Small percentage wool sensitivity: Most people tolerate fine merino beautifully. A small percentage still react to wool even at 17–19 microns. If you've reacted to merino before, start with a wool/silk blend first (like this one) or test a swatch before committing. Price: This is heritage European manufacturing, not mass-produced. You're paying for three generations of family craftsmanship, ethical sourcing, and transparency. Cost reflects durability and value—but it is a premium price point.
The Investment Case
A properly cared-for merino/silk shirt lasts years of regular wear and improves with age—wool softens and breathes better after multiple washes. Unlike synthetics, it won't pill, degrade from sweat, or lose shape. You'll rotate this shirt through every season: spring/fall as a standalone piece, winter with an outer layer, summer in cool climates. It's a true all-seasons workhorse that does the job of multiple synthetic shirts. If natural fiber performance, ethical manufacturing, and longevity matter to you, this justifies its price through durability and versatility.
Keeping It Fresh

Care & Washing

Hand wash or delicate cycle Cold water only Wool-specific detergent Lay flat to dry No tumble dry

The short version: Merino rarely needs washing. Air your shirt between wears—hang it or lay it flat for 24 hours and most odors fade naturally. Wool regenerates in fresh air.

When a full wash is needed: Hand wash in cold water with a wool-specific detergent (Eucalan, Sonett wool wash, or equivalent). Submerge gently; do not agitate or wring. Press water out softly. Lay flat on a clean towel to dry, reshaping as it dries. Drying typically takes 24–48 hours.

Why: Hot water, agitation, and tumble drying cause merino and silk to felt, shrink, and lose shape. Cold water and gentle handling preserve fiber structure and the luxurious hand feel.

Pilling: With proper care, pilling is minimal. Any small balls that form can be gently removed with a wool comb or soft brush once dry.

Common Questions

Frequently Asked Questions

Will this itch? I've had bad experiences with wool.
Fine merino at 17–19 microns is genuinely different from coarse wool. It's soft enough for most babies and sensitive-skinned adults. That said, a small percentage of people are still sensitive to wool fiber itself. If you've reacted before, test a small swatch first, or start with the wool/silk blend (like the Gregor), which adds silk's inherent softness and is the gentlest merino option.
How often do I need to wash this?
Merino is naturally odor-resistant. Most wearers air the shirt between wears (24–48 hours hanging or laid flat) and only fully wash every 5–10 wears or when visibly soiled. This reduces water, detergent, and care time compared to synthetic base layers.
Is it really warm enough for winter?
Yes, as a standalone. The medium-weight spacer-knit construction provides genuine insulation. In mild winter (45–55°F) with a windproof jacket, it's all you need. In cold winter (below 40°F), add a sweater or fleece. Merino's temperature-regulating properties mean you won't overheat in a layered system, and you can adjust as your activity level changes.
Can I machine wash on delicate?
Yes, many merino/silk pieces tolerate a wool or delicate cycle with cold water and wool detergent. Hand wash is safer, but if you machine wash, use cold water, wool detergent, and lay flat to dry immediately—never tumble. Test on one wear before committing this to machine washing regularly.
What's the difference between this and pure merino?
Pure merino is slightly warmer and more robust. Merino/silk (70/30) is softer to touch, less itchy, and more refined in appearance—the silk adds subtle sheen and deepens the softness. The Gregor is excellent as a standalone shirt across seasons; pure merino is better if maximum insulation is your priority. If you want versatility, refined feel, and comfort as a standalone piece, merino/silk is the better choice.
Is the silk real silk, or synthetic?
Reiff uses real silk (mulberry). Real silk is biodegradable, breathable, and thermoregulating—it genuinely softens merino and adds luxury. Synthetic silk alternatives exist but don't perform the same way. At this price point, you're getting the real thing.
How long will this last?
Properly cared-for merino base layers last 5+ years of regular wear, often improving with age as wool softens. The investment cost is offset by durability: synthetic base layers typically degrade within 1–2 years. Over a decade, merino becomes the economical choice.
Shipping & Packaging

All EcoAble orders ship in plain, unmarked packaging. Made-in-Germany quality, discreetly delivered.

Additional Details

Materials:
70% Organic Merino Wool / 30% Silk
Origin:
Made in Germany
Care:
Wool resists odor and is self-cleaning. Air out between wears. Spot clean as needed. Hand wash in cool water with wool detergent. Lay flat on a towel, roll to gently squeeze out excess water. Lay flat to dry.