Skip to content
  • 💰 Get the latest and spend less with our big sale! 💰
  • 💰 Get the latest and spend less with our big sale! 💰
Peak CampingPeak Camping
  • Menu
  • Sleeping Bags
    • Down Sleeping Bags
    • Synthetic Sleeping Bags
    • Bag Liners
    • Quilts & Blankets
    • Sleeping Bag Accessories
  • Tents
    • 3 Season Tents
    • Tent Footprints
    • Tent Accessories
    • Tarps & Wings
    • 4 Season Tents
    • Bug Shelters
    • Bivies
    • Ultralight Tents
  • Backpacks
    • Backpacking Packs
    • Ski & Snowboard Packs
    • Daypacks
    • Climbing Packs
    • Pack Accessories
    • Hydration Packs
    • Duffels & Totes
    • Lumbar Packs
    • Travel Packs
    • Courier & Shoulder Bags
    • Dry Packs & Bags
    • Running Packs & Accessories
  • Sleeping Pads
    • Air Pads
    • Self Inflating Pads
    • Travel & Camping Pillows
    • Accessories
    • Cots
  • Hydration
    • Hydration Accessories
    • Water Bottles
    • Water Treatment
    • Treatment Accessories
    • Hydration Reservoirs
  • Trekking Poles
    • Trekking Poles
    • Accessories
    • Single Staffs
  • Lighting
    • Headlamps
    • Lanterns
    • Accessories
  • Accessories
    • Camp Chairs
    • Knives and Tools
    • Toiletries
    • First Aid
    • Personal Care
    • Stickers and Patches
    • Stuff Sacks
    • Dry Bags
    • Emergency Gear
    • Outdoor Blankets
    • Storage Bags
    • Bug Nets & Repellent
    • Treatments and Cleaners
    • Compression Sacks
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

Home / Sleeping Bags / Synthetic Sleeping Bags
  • The North Face Dolomite One Double -Peak Camping nf0a3s8p 5gs hero rsz 79272.1626823175
  • Exped MegaSleep Duo 25 -Peak Camping megasleep duo 25 7640171997308 7640445452533 rsz 47664.1626823325
Sale!
Sea To Summit Trailhead ThIII 20F
Sea To Summit Trailhead ThIII 20F - Image 2
Sea To Summit Trailhead ThIII 20F - Image 3
Sea To Summit Trailhead ThIII 20F - Image 4
Sea To Summit Trailhead ThIII 20F - Image 5
Sea To Summit Trailhead ThIII 20F -Peak Camping synthetic material sleeping bag 204 20f rsz 09572.1643325102
Sea To Summit Trailhead ThIII 20F -Peak Camping car camp synthetic sleeping bag 2048x.progressive20f rsz 44725.1643325102
Sea To Summit Trailhead ThIII 20F -Peak Camping s4031 trailheadthiiisleepingbag regular topclosed forweb 2048x.progressive rsz 85332.1643325102
Sea To Summit Trailhead ThIII 20F -Peak Camping trailheadspecimage 2048x.progressive rsz 1 63017.1643325102

Sea To Summit Trailhead ThIII 20F

$179.00 Original price was: $179.00.$97.99Current price is: $97.99.

Clear
SKU: YMFJA 12075 Categories: Sleeping Bags, Synthetic Sleeping Bags Tags: Sea to Summit, Synthetic Sleeping Bags
  • Top-Notch Quality
  • Satisfaction Guaranteed
  • Risk-Free Shopping with Returns
  • Top Quality Products
Browse
  • Accessories
    • Bug Nets & Repellent
    • Camp Chairs
    • Compression Sacks
    • Dry Bags
    • Emergency Gear
    • First Aid
    • Knives and Tools
    • Outdoor Blankets
    • Personal Care
    • Stickers and Patches
    • Storage Bags
    • Stuff Sacks
    • Toiletries
    • Treatments and Cleaners
  • Backpacks
    • Backpacking Packs
    • Climbing Packs
    • Courier & Shoulder Bags
    • Daypacks
    • Dry Packs & Bags
    • Duffels & Totes
    • Hydration Packs
    • Lumbar Packs
    • Pack Accessories
    • Running Packs & Accessories
    • Ski & Snowboard Packs
    • Travel Packs
  • Hydration
    • Hydration Accessories
    • Hydration Reservoirs
    • Treatment Accessories
    • Water Bottles
    • Water Treatment
  • Lighting
    • Accessories
    • Headlamps
    • Lanterns
  • Sleeping Bags
    • Bag Liners
    • Down Sleeping Bags
    • Quilts & Blankets
    • Sleeping Bag Accessories
    • Synthetic Sleeping Bags
  • Sleeping Pads
    • Accessories
    • Air Pads
    • Cots
    • Self Inflating Pads
    • Travel & Camping Pillows
  • Tents
    • 3 Season Tents
    • 4 Season Tents
    • Bivies
    • Bug Shelters
    • Tarps & Wings
    • Tent Accessories
    • Tent Footprints
    • Ultralight Tents
  • Trekking Poles
    • Accessories
    • Single Staffs
    • Trekking Poles
  • Description
  • Additional information
  • Reviews (0)

If you are new to outdoor recreation, or you only camp occasionally, the Trailhead ThIII 20F synthetic mummy sleeping bag is a great value-oriented option. However, the modest price tag doesn’t mean it has cut corners on comfort and versatility. Like all Sea to Summit synthetic mummy sleeping bags, the Trailhead utilizes WaveLoft™ construction to allow the insulation to expand out into air-trapping curves for maximum warmth.
As the temperature rises, the full-length zipper (which curves around through the foot box) allows you to sequentially increase ventilation to the point where the mummy sleeping bag can be opened flat and used as a quilt.
The tapered-rectangular mummy cut of the Trailhead gives you plenty of room to move, regardless of your sleeping position.

Other Features:
  • WaveLoftâ„¢ construction for improved air-trapping for maximum warmth
  • Quality DWR-treated nylon shell material helps repel external moisture
  • Comfortable 20D nylon liner fabric
  • Full-length YKK® #5 main side zip extends through the foot box zip for increased ventilation and allows the bag to be used as a comforter
  • Oversized draft tubes over the zippers to seal in warmth
  • Includes stuff sack
Size

Regular (6 ft 0 in.), Long (6 ft 6 in.), Regular Wide (6 ft 0 in.)

Insulation:

Polyester (using WaveLoftâ„¢ construction)

Bag Length:

Reg & Reg Wide: fits users up to 6 ftLong: fits users up to 6 ft 4 in

Bag Stuff Size:

10.2L volume when compressed with included stuff sack

Circumference at Foot:

Regular: 46 in / 116 cmReg Wide: 48 in / 122cmLong: 48 in / 122 cm

Circumference at Hips:

Regular: 58 in / 148 cmReg Wide: 63 in / 161 cmLong: 60 in / 152 cm

Circumference at Chest:

Regular: 58 in / 148 cmReg Wide: 68 in / 172 cmLong: 60 in / 152 cm

Bag Shell Material:

30D nylon with DWR

EN Comfort (Women's Rating):

31°F / -1°C

Brand Name:

Sea to Summit

EN Lower Limit (Men's Rating):

20°F / -7°C

Temp Rating Celsius:

-7° C

Temp Rating:

20° F

Seasonal Usage:

Three Season

Bag Style:

Semi-Rectangular

Color:

Deep Blue

Gender:

Unisex

Weight:

Regular: 3 lbs 0.3 oz / 1370 gReg Wide: 3 lbs 6 oz / 1550 gLong: 3 lbs 6 oz / 1530 g

Reviews

There are no reviews yet.

Be the first to review “Sea To Summit Trailhead ThIII 20F” Cancel reply

Related products

Sale!
Sequoia GWS
Quick View

Down Sleeping Bags

Sequoia GWS

$331.00 Original price was: $331.00.$99.99Current price is: $99.99.
Sale!
Cocoon Egyptian Cotton MummyLiner
Quick View

Bag Liners

Cocoon Egyptian Cotton MummyLiner

$34.36 Original price was: $34.36.$24.05Current price is: $24.05.
Sale!
Sea To Summit Expander Liner - Traveller W/ Pillow Insert
Quick View

Bag Liners

Sea To Summit Expander Liner – Traveller W/ Pillow Insert

$36.95 Original price was: $36.95.$25.87Current price is: $25.87.
Sale!
HighLite
Quick View

Sleeping Bags

HighLite

$319.00 Original price was: $319.00.$96.99Current price is: $96.99.
Sale!
Marmot Wind River -10
Quick View

Sleeping Bags

Marmot Wind River -10

$378.95 Original price was: $378.95.$97.99Current price is: $97.99.
Sale!
Nemo Forte 35 - Men's
Quick View

Sleeping Bags

Nemo Forte 35 – Men’s

$169.95 Original price was: $169.95.$99.99Current price is: $99.99.
Sale!
Marmot Cwm -40
Quick View

Down Sleeping Bags

Marmot Cwm -40

$314.00 Original price was: $314.00.$97.99Current price is: $97.99.
Sale!
Big Agnes Anvil Horn 30
Quick View

Down Sleeping Bags

Big Agnes Anvil Horn 30

$269.95 Original price was: $269.95.$98.99Current price is: $98.99.
OUR SHOP
  • My account
  • Checkout
  • Cart
  • Payment Method
CONTACT
  • About Us
  • Contact Us
  • FAQ
  • Returns & Exchanges
CUSTOMER SERVICES
  • Privacy Policy
  • Shipping & Returns
  • Term and Conditions
  • Delivery
STAY IN TOUCH

Sign up for exclusive offers, original stories, events and more.

    Copyright 2025 © www.campingsave.com
    • Sleeping Bags
      • Down Sleeping Bags
      • Synthetic Sleeping Bags
      • Bag Liners
      • Quilts & Blankets
      • Sleeping Bag Accessories
    • Tents
      • 3 Season Tents
      • Tent Footprints
      • Tent Accessories
      • Tarps & Wings
      • 4 Season Tents
      • Bug Shelters
      • Bivies
      • Ultralight Tents
    • Backpacks
      • Backpacking Packs
      • Ski & Snowboard Packs
      • Daypacks
      • Climbing Packs
      • Pack Accessories
      • Hydration Packs
      • Duffels & Totes
      • Lumbar Packs
      • Travel Packs
      • Courier & Shoulder Bags
      • Dry Packs & Bags
      • Running Packs & Accessories
    • Sleeping Pads
      • Air Pads
      • Self Inflating Pads
      • Travel & Camping Pillows
      • Accessories
      • Cots
    • Hydration
      • Hydration Accessories
      • Water Bottles
      • Water Treatment
      • Treatment Accessories
      • Hydration Reservoirs
    • Trekking Poles
      • Trekking Poles
      • Accessories
      • Single Staffs
    • Lighting
      • Headlamps
      • Lanterns
      • Accessories
    • Accessories
      • Camp Chairs
      • Knives and Tools
      • Toiletries
      • First Aid
      • Personal Care
      • Stickers and Patches
      • Stuff Sacks
      • Dry Bags
      • Emergency Gear
      • Outdoor Blankets
      • Storage Bags
      • Bug Nets & Repellent
      • Treatments and Cleaners
      • Compression Sacks
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.