The Lightning was one of our first major successes in the ultralight category, winning a Backpacker "Editors' Choice" award in 2004. Freestanding, simple to pitch, the Lightning weighs a scant three pounds, 15 ounces. Clip-Locs and Swift Clips pull up to the x-pole design, meaning you can pitch the whole gig in seconds. With a nine-square-foot vestibule and plenty of mesh, it's comfortable, organized, and you won't get annoying condensation in the morning. DAC Featherlite NSL poles save weight without sacrificing strength, and the 40-denier fly sheds heavy rain for seasons to come.
Tent Apex Series Technology
Color Coded Webbing
Guides pole placement for speed and ease of set-up
Allows for quick orientation of rainfly set-up (color-coded on stake loops and on rainfly)
Constructed of durable, lightweight nylon
Dye-Free Optic White Canopy
Optic white canopies transmit light more effectively to give a brighter and more pleasant environment for long hours inside tent
Sierra Designs produces the Optic White Canopy™ without the use of chemical dyes
Swift Clips
A Sierra Designs innovation that allows the tent to be staked out before attaching the body to the pole structure
Computer Aided Design
A Sierra Designs system of using Computer Aided Design to make technically superior tents
Allows us to design tents that have a uniform distribution of stress 
Lightweight Fly Material
40-denier, 1.94oz/ High-Tenacity Nylon with a 246 thread count in a Rip-stop weave
Silicone coating provides additional lightweight, waterproofness and UV protection
1500mm waterproof Polyurethane under coating allows for seam taping and is durable and waterproof
100% waterproof to 80 PSI 
UL Stake Loops and Vestibule Stake Out Tensioners
Lighter than webbing stake out loops
Made from 3mm, reflective, cord and color coded to the fly to ease set up
The ultralight line locks are small and compact yet cinch down fast and tight 
DAC® Featherlite NSL Poles
Thicker diameter poles with a thinner wall increases strength and saves weight
Expanded insert combined with a large diameter pole creates a stronger connection point between pole sections
The best strength-to-weight ratio of any tent pole available today
Unique joining insert allows for a cleaner, smoother transition in Reverse Combi Technology™ (RCT)
DAC® has greatly reduced the use of phosphoric and nitric acid in the anodizing process (cleaner manufacturing makes for a cleaner environment)
Reflective Door Binding Tape
By adding wide, reflective binding around the doors, our 4 Season tents provide extreme reflectivity in your head lamps during low visibility conditions
Locking Pole Tips
Keeps pole tips locked in grommet for faster, easier set up
Extended pole tips can be found on all 4-Season tents as well as the Tengu 3 and Tengu 2
A Sierra Designs innovation
SuperSeal FloorCombines benefits of catenary and bathtub floors
Raised, taped, perimeter seam provides guaranteed waterproofness
Maintains a tighter pitch with a better wind line to prevent flapping
Tent Guard with Ultra Fresh
We begin using Tent Guard with Ultra Fresh in 2004 (a Sierra Designs exclusive at the time!) and with great success. Applied as part of the PU coating to our rain flies, floors and footprints, Tent Guard extends the life of a tent by thwarting mold, mildew and fungus. Particularly on extended trips or in damp climates, Tent Guard protects a tent if it is packed or stored temporarily while wet — another bit of piece of mind for your customers.
Specifications:
Trail Weight 3 lbs 15 oz
Fastpack Weight 2 lbs 7 oz
Packed Weight 4 lbs 6 oz
Packed Size 25" x 7"
Number of Doors 1
Interior Area 31 sq. ft.
Vestibule Area 9 sq. ft.
Peak Height 40"
Floor Material 70D Taffeta Nylon, 1800mm
Body Material 40D Nylon Rip Stop, 1500mm
Fly Material 40D HT Nylon Rip Stop PU/Silicon, 1500mm
Number of Poles 2
Poles DAC Featherlite NSL, 9.0mm