Guyot Designs Firefly

2 reviews
5-star:   0
4-star:   2
3-star:   0
2-star:   0
1-star:   0



This is a great little addition to any backpacker's…

Rating: rated 4.5 of 5 stars
Price Paid: USD $19.95 new

This is a great little addition to any backpacker's supply stash. Since it fits on a standard wide-mouth Nalgene that most people would already be carrying in the backcountry, it doesn't require any additional space in your pack AND it turns your water bottle into a multipurpose item.

The quality of the light is perfect for providing enough light to see around inside the tent. It's not enough light to read by, and it's not enough light to use as a task light, but I would use a small headlamp for both of those needs anyway.

It is perfect for a night light or for "mood lighting" inside the tent (or for when your 3-year-old nephew rolls off his air bed in the middle of the night and you don't want to blind everyone in the tent by turning on a bright headlamp), and it's also enough light to light your way through the woods if you don't want to kill your night vision.

Like the other reviewer said, it doesn't give off enough light for what most people want for car camping, but that's not what it's designed for. I hate the blinding light of fuel lanterns in a campground anyway. I love the Firefly for what it is. And when I need brighter task lighting, I use my headlamp.

The only cons are the added weight (though it doesn't weigh much, it's still a few additional nonessential ounces) and the fact that a tiny jeweler's screwdriver is necessary to change the batteries.

But to counter those drawbacks, I will say that I consider it a luxury and not a necessity in the backcountry, and I always check the batteries before I head out.

I have mine on a purple Nalgene, which puts off a really pretty glow.


I love this product. You have to understand its strengths…

Rating: rated 4 of 5 stars
Price Paid: $20

I love this product. You have to understand its strengths and limitations before you sign on, though.

Strengths: It's light, rugged and small, which is hard to say for most lanterns.

Limitation: it's not bright. We bought ours on a trip that involved airline travel, and the conventional lantern was too big to take.

Many people will need/expect this lantern to throw more light than it does. Sorry this doesn't compete at all with a Coleman lantern, if you need to light up a whole campsite, get a propane or liquid gas lantern. The Guyot lights a circle of 4-5 feet and it's most effective when you're a long ways away from any other light source. It provides enough light to cook, wash some dishes, or walk to a latrine. In the gear loft, it can be dimmed to make a night light for the kids.

We use ours with a white polyethylene bottle which diffuses the light very nicely. Having liquid in the bottle has no effect on the light diffusion.

One other surprise: it requires a jewelers phillips head screw driver to install batteries.

Retailers' Descriptions

Here's what other sites are saying:

Convert your wide-mouth bottle into a lantern! The unique lid design contains an integrated LED light which spreads a warm glow throughout the bottle. Use as a trail-light or night-light too. Compatible with all standard wide-mouth bottles. Dimmer for variable light levels, whether it's a reading light or a night-light for stormy nights. LED lights are sealed inside the lid, so there's no risk of liquid gumming up the works. Ultra-bright LED lights last a lifetime. 3AAA batteries required. O-ring seal for a tight fit. Granite-grade glass-filled nylon lid. 4 mm nylon tether. Works with Guyot's translucent SplashGuard; (item #210-224-848).


Is it a sturdy, cleverly designed water bottle lid or the source of playful mood lighting? Surprise: It's both and much, much more! Guyot Firefly™ turns your standard 63mm (wide-mouth) bottle into a handy lamp suitable for use as a nightlight or reading lamp. Integrated LED spreads a warm glow throughout the bottle; single-button control lets you adjust light from bright to dim, as your needs dictate. Change out with various colors of bottles for different effect; use with any clear liquid inside—tea with lemon slices creates cool wall images. Unique design allows Firefly to be used right side up, upside down or hanging from tent loop or tree branch. Use it as a watertight lid during the day; electronics are sealed in a separate compartment, eliminating risk of liquid messing up the works. Unique attachment system keeps lid securely cinched to bottle, all the while allowing it to be screwed on and off with ease. LEDs are nearly indestructible and greatly extend battery life; operates on 3 AAA batteries, not included. Bottle not included; do not place lid in dishwasher.


The Guyot Designs Firefly Bottle Lantern allows you to convert your wide-mouth water bottle into a LED lantern. Features Dimmer sets the mood on the trail or at homeLED lights are sealed in the lidFits all standard wide-mouth bottlesLED lights last a lifetimeWorks with a translucent SpalshGuard3AAA batteries required

- OMCgear

Guyot Designs Firefly

previously retailed for:
$14.93 - $19.95

The Guyot Designs Firefly is not available from the stores we monitor. It was last seen October 2, 2010 at Gear for Adventure.

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