Spring Sale: Up to £218 off. Sale ends 20th April.
 
Cart 0 items
Sub-Total ¥0.00
Cart
Checkout
  • My Account
    • New Customer
      By creating an account, you will be able to:
      • shop faster,
      • benefit from our Customer Discount Scheme,
      • see your order history.

      If you don't have an account with us yet, click on the "Continue" button, to add your details.

      Continue
    • Returning customer
      Password forgotten? Click here.
JPY
GBP EUR USD
www.phdesigns.co.uk
  • Products
      • Sleeping Bags
        • Main Sleeping Bags
        • Overbags & Filler Bags
        • Down Quilts
        • Design Your Own
        • Half bags
        • Bivouac Sleeping Bags
        • Sleeping Bag Extras
      • Insulated Clothing
        • Jackets and Pullovers
        • Vests
        • Trousers and Salopettes
        • Down Suits
        • Ventile Down Jackets
        • Film and Photography
      • Shells & Midlayers
        • Shells and Waterproofs
        • Midlayers
      • Custom
        • Custom sized clothing
        • Customized sleeping bags
        • Mountain Guides & Rescue Teams
      • Accessories
        • Insulated Mitts
        • Insulated Socks
        • Hats and Balaclavas
        • Stuff Sacs
      • Special offers
        • Bargain Box
        • Spring Sale Ends April 20
      • Ready madeships in 5 days
      • Repairs & alterations
      • Gift Vouchers
      BARGAIN BOX
      Comfort-focused bags.
      Ultralight & roomy
      NEW! Denali Down Jacket & Trousers.
      SPRING SALE
      Ends 20 April

      Up to £218 off
  • Explore PHD
    • WHO WE ARE
      Experience
      Decades at the cutting edge: a 60 year heritage of British craftsmanship
      Innovation
      Revolutionary down suits, modular sleep systems, the very lightest gear: innovation lies at the heart of everything we do
      Customisation
      Handmade gear that’s as unique as you are: from custom sized clothing to Design Your Own sleeping bags
      The Lowdown
      Extraordinary stories and technical knowhow
      The Million Dollar Mountaineer
      Alex Pancoe aims to raise $1m for a children's hospital in a PHD Double Down Suit.
      Doing Something Crazy and Huge
      Rosie Swale Pope, fresh from running from Land’s End to John O’Groats, is about to run to Kathmandu.
      The Top of the World in Winter
      Ten Nepalese climbers have made the first winter ascent of K2. And two of them wore PHD suits.
      more posts
      Sign up for our newsletter
      Stay up-to-date with our news—including on sales and special offers.
      facebook twitter instagram youtube
  • Advice
    • Gear adviser
      Gear Advice for Iceland
      ALL DESTINATIONS
      Tell us where you're heading, we'll tell you what to take
      Race calendar
      Kit me out for the Viking Ultra Iceland
      All races
      From desert races to mountain marathons: our kit picks
      Sleep systems
      Sleep Systems for Mid-Level Treks
      ALL SLEEP SYSTEMS
      Optimised layering: maximum versatility; minimum weight.
      Technical briefings
      Briefing of the month: Temperature ratings for down sleeping bags and clothing
      ALL BRIEFINGS
      Temperature ratings explained, caring for your gear…all the info you could possibly need!
      Other advice
      • Contact Us
      • Ordering & Payment
      • FAQs
      • A Guide to PHD's sizes
      • Customer Loyalty Scheme
      • Postage & Delivery
      • Guarantee and returns
  • My Account
  • Technical Briefings

Technical Briefings

Choosing the right gear requires more than a little knowledge about the raw materials and techniques used in their manufacture. In this section you can find out some of the trade secrets.
Down
What is Down? Down Quality Testing Down Quality: Fillpower Testing Down Quality: Down % PHD's Down Down Gear in use Cleaning Down Sleeping Bags & Clothing Down vs. Synthetic Insulation
Sleeping bags
Sleeping Bag Construction Getting the best from your Sleeping Bag Design Your Own Sleeping Bag The Truth about Sleeping Bags Vapour Barrier Liners Waterproofing Sleeping Bags Sleeping bag zips
PHD's Materials
Fabrics Zips Synthetic Insulation and Fleece Down Caring for waterproof fabrics
Temperature
Temperature Ratings Windchill
One Piece Suits
Toilet access Down Suits vs. Down Jacket and Salopettes
Ultralight Gear
Ultralight Gear
Contact
Peter Hutchinson Designs
PO Box 278, Dacre Banks
Harrogate
North Yorkshire
HG3 4WA
United Kingdom
+44 (0)1423 711212
Our office is open Mo - Fr (9:00 AM-3:00 PM)
office@phdesigns.co.uk
LIVE CHAT
© 2021 Peter Hutchinson Designs
Products
  • Sleeping Bags
  • Insulated Clothing
  • Shells & Midlayers
  • Insulated Mitts
  • Insulated Socks
  • Hats and Balaclavas
  • Ready madeships in 5 days
  • Custom size your clothing
  • Customize your sleeping bag
  • Ventile Down Jackets
  • Film and Photography Clothing
  • Gift Vouchers
  • Mountain Guides & Rescue Teams
  • Bargain Box
  • Repairs & alterations
Explore PHD
  • Who we are
  • The Lowdown

Extraordinary stories and technical knowhow

facebook twitter instagram youtube
Sign up for our newsletter
Stay up-to-date with our news—including on sales and special offers.
Advice
  • Gear Adviser Tell us where you're heading, we'll tell you what to take
  • Race Calendar From desert races to mountain marathons, our kit picks.
  • Sleep Systems Optimised layering: maximum versatility; minimum weight
  • Technical Briefings
  • Ordering & Payment
  • FAQs
  • A Guide to PHD's sizes
  • Customer Loyalty Scheme
  • Postage & Delivery
  • Guarantee and returns
  • Privacy Policy
  • Cookie Policy