Strong base. Strong chase.
GX2™ Base Layer - Grey
The GX2 base layer is engineered with a dual-sided thermal grid that actively balances heat retention and moisture release. The outer face holds warmth in structured channels, while the inner surface lifts sweat off the skin and accelerates drying.
GX2 uses silent 4-way stretch for total mobility under pressure and a tailored fit that eliminates bunching beneath mid layers. Thumbholes and a drop hem keep it locked in during long sits or aggressive walk-ins. Designed to function in varied environments — from cold static blinds to active pre-dawn setups — this is your go-to base in any system.
Stay warm. Stay ready. Stay in it.
Jackets & Tops Size Guide
Product information
Not sure which size will fit best? Order more than one and keep what works. We will cover the exchange.
How It Works
Order confidently
If you are between sizes, add both to your cart.
Try it on at home
Make sure gear is clean and unworn when you test the fit.
Send back what does not fit
Use our free exchange process to return the extra size.
Keep hunting
We will make sure you end up with the right fit. No hassle, no wasted time.
The Details
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Exchanges are free within 30 days of purchase. Start your exchange here.
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Items must be clean, unworn, and with tags attached.
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Refunds go back to your original payment method.
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For international customers, exchanges are not available but returns are.
Why We Do It
Fit matters in the field. We would rather you order two and end up with the right size than settle for gear that does not feel right. Every piece is built to last a season and beyond, but only if it fits the way it should.
ROSCO BLUEPRINTS
The hunt starts at the base. Gridlock™ was built to hold heat when you’re still and dump sweat when you’re moving. The thermal grid keeps the balance, warmth outside, moisture lifted inside. Add silent stretch, thumbholes, and a drop hem, and you’ve got a base that stays put and keeps you ready from the walk in to the last sit.
WHAT YOU NEED TO KNOW
Everything you need. Nothing you don't.
FEATURES
DETAILS THAT MATTER
FIT & LAYERING
The right fit keeps you comfortable in the blind and on the move. Our system is built to layer clean, move quiet, and keep you ready from dawn to dark.
Fit Guide
Base Layers
Athletic cut, minimal bulk, built to stay put under pressure.
Mid Layers
Tailored warmth without bulk. Designed to move and insulate.
Outerwear
Classic fit with room to layer. Articulated and durable for weather and wear.
Layering System
Base: Moisture + Heat Balance
Starts next to skin. Wicks sweat, holds warmth.
Examples: GX2™ Base, Underline Wader Pant
Mid: Insulation + Mobility
Traps heat and flexes with you.
Examples: Wool 1/4 Zip, Waffle Flannel, Field Vest, Half-Zip
Outer: Weather + Durability
Blocks wind, rain, and brush. Keeps everything together.
Examples: Drylock™ Shell, Guide Pro Jacket
How to Layer
Cold, Static Hunts
Base: GX2™
Mid: Wool Sweater + Vest
Outer: Drylock™ Shell
Active Hunts / Long Walk-Ins
Base: GX2™ or Lightweight Hoodie
Mid: Flannel or Half-Zip
Outer: Guide Pro Jacket
Everyday / Crossover Wear
Base: GX2™
Mid: Wool 1/4 Zip
Outer: None or casual shell
GRIDLOCK ENGINEERING
DUAL-SIDED THERMAL GRID FLEECE
Exterior traps heat, interior lifts moisture for balanced warmth.
MOISTURE-WICKING INTERIOR
Moves sweat off skin while locking in heat.
SILENT 4-WAY STRETCH FABRIC
Flexible, quiet fabric built for unrestricted movement.
ATHLETIC FIT FOR ZERO BULK UNDER LAYERS
Streamlined cut layers clean without bunching.
SLEEVE THUMBHOLES
Keeps sleeves locked through movement.
F.A.Q.
FIT & SIZING
How do RosCo sizes run?
Most pieces run true to size. If you plan to layer heavy, consider sizing up.
What if I’m between sizes?
For base and mid layers, size down for a closer fit. For shells and outerwear, size up to allow room for layering.
Are your fits athletic or relaxed?
- Base layers: Athletic fit, minimal bulk.
- Midlayers: Tailored to layer without restriction.
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Outerwear: Classic fit with room for movement and gear.
Do your tops have extra length?
Yes. Many tops feature a drop hem for coverage when bending, sitting, or wearing waders.
How do I measure myself?
Use a soft tape measure:
- Chest: Under arms, around shoulder blades.
- Waist: Where you normally wear pants.
- Hips: Around the fullest part of your seat.
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Sleeve: From the back of your neck, over the shoulder, down the arm to the wrist.
Do you offer tall sizes?
Not yet, but several pieces feature extended hems and articulated sleeves designed to fit longer builds.
What if I order the wrong size?
We offer free size exchanges within 30 days. [Link: Size Exchange Page]
FABRIC CARE
How do I wash wool pieces?
Spot clean when you can. For bigger washes, use cold water, gentle cycle, and lay flat to dry. Do not tumble dry.
How do I wash technical shells?
Cold wash on gentle cycle with a tech wash (no fabric softener). Hang dry. This keeps waterproofing intact.
Can I machine wash flannels, hoodies, and fleece?
Yes. Cold wash, tumble dry low, no bleach.
Do dryers or irons damage gear?
Yes. Heat breaks down waterproof coatings and wax. Air dry everything to extend life.
How often should I reapply waterproofing?
When water stops beading on the fabric. For waxed canvas, apply a fresh coat of wax. For shells, use a spray-on or wash-in waterproofing treatment after cleaning.
HOW DO YOU HANDLE RETURNS?
How long do I have to return?
30 days from the purchase date.
What condition does gear need to be in?
Unworn, clean, and with tags.
How will I get my refund?
Refunds go back to your original form of payment.
Do you offer exchanges?
Yep, size exchanges are free.
How do I start a return?
Use the Returns Portal. Enter your order number and email, select items, print the return slip, and ship it back. Keep your tracking number until your refund is processed.
When will I see my refund?
Usually within 5–7 business days after we receive your return. During peak seasons, it may take a little longer.