Platypus Big Zip II
Price Paid: $15.99
I'm currently on my second Big Zip (first one fell off of my motorcycle and when I shipped it back to Cascade Designs for repair, they replaced it for free, even though the failure was my fault) and have had excellent service from this product. The Big Zip allows the addition of ice for short, warm day trips and the design is excellent.
I have been using my Big Zip for over 7 years with no failure. Both on my motorcycle and day hiking trips. This is a great product.
Price Paid: $28.95
When I bought a sub-2-pound pack, I needed a reservoir that was lightweight and slim (tubular/cylindrical reservoirs created an uncomfortable bulge in the back of the pack). I settled on the Big Zip since it allowed me to carry a lot of water for the weight. On only the third use, the adaptor where the hose enters the reservoir cracked and developed a fast leak. Not what you want from your reservoir in the middle of your hike (good thing it was a 20 mi loop and not a multiday excursion)!
I believe the failure was the result of poor design as the bag tends to get a kink in it in the area of the tube entrance, placing pressure on the adaptor. Bottom line, this product is not durable enough to warrant ANY confidence. Be safe and take something stronger.
Where to Buy
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Here's what other sites are saying:
Convert an ordinary day pack into a "hydration sports pack". "Self-energizing" seal prevents accidental opening, while shutoff valve stops accidental spills. Wide-opening and rounded corners make filling and cleaning a snap. Taste-free polyethylene-lined reservoir and drinking tube add no unpleasant plastic taste and resist bacterial growth. HyperFlow bite valve. Size: 6.25"x17". The drinking tube length is 40"
Easier than ever to clean, the Platypus Big Zip II features a taste-free drinking tube and high-flow shutoff valve that protects against accidental spills. Keep yourself hydrated without the mess and fuss of old-fashioned hydration bladders.
- Mountain Gear
Platypus Big Zip 2 hydration system is loaded with smart features including a wide-mouth zip-track opening for easy filling and cleaning, a taste-free drink tube, and high-flow shutoff valve that's angled for no-hassle drinking. Ideal for upgrading your current setup or adding to a favorite pack. Drink tube and reservoir are lined with polyethylene to create a completely taste-free system and resist bacterial growth.. HyperFlow bite valve offers the highest flow rate on the market, while the ergonomic shutoff valve is angled at 90 degress for no-hassle, hands-free hydration. Wide opening and new rounded corners make filling and cleaning easy, along with the secure zip-track seal that prevents accidental spills. 1 Liter: Capacity: 34 oz. Dimensions: 6 x 12 in., 15 x 30 cm Weight: 3.5 oz., 100 g. 1.8 Liter: Capacity: 60 oz. Dimensions: 7.5 x 13 in., 19 x 33 cm Weight: 4 oz., 120 g. 2 Liter: Capacity 70 oz. Dimensions: 6.25 x 17 in., 16 x 43 cm Weight: 4 oz., 120 g. 1 Liter: Capacity: 34
- Tahoe Mountain Sports
The Platypus Big Zip II is a lightweight hydration reservoir that has a wide opening for easy filling and cleaning. A shutoff drinking valve keeps you from accidentally emptying your Platypus Big Zip II when you set your pack down.Specifications: Weight: 100 g / 3.5 oz Dimensions: 15 x 30 cm / 6" x 12"