Thermos E5 20-oz. Travel Mug
Equipment Details
Manufacturer: ThermosBrand: Thermos
Product features:
- Stainless steel inside and out
Sports reviews of Thermos E5 20-oz. Travel Mug
Customer Review: Nice size, good temperature retention, but doubt some claims.
Sport shop rating: 4 Stars
I am an admitted insulated bottle addict and collector, much to my wife's dismay. I own two Nissan Stainless 18oz tumblers (with the flip-tab top), an older 16 oz "bullet bottle", a new 18 oz Raya bottle, and most recently this bottle from the E5 line. At first, I wasn't sure I wanted a new thermos, but when I read the web site's description (on [...]) that indicated that it had a 24 hour hot temperature retention capability vs. 12 hours in the Raya, I went for it.
It is a sturdy bottle, and I like that I don't have to deal with water getting under the "comfort grip" in the middle of the Raya bottle's exterior when I wash it in the sink (never wash thermos containers in the dishwasher). I also like that it's steady when standing because of its wide base, and a bit shorter than the Raya but holding 20 oz instead of 18. The clip on the side could also be useful, although it jangles against the metal when not in use. However, I'm beginning to doubt the 24 hour claim, as things seem to cool off a bit more quickly vs. the Raya, and the "low mass" lid is code for it not being insulated. When screwed on, this should speed up heat loss, and when in use as a cup, the same applies to the liquid in the cup, which is basically plastic. The stopper and bottle are the same design as other containers, though, so perhaps that is all that is needed to block heat loss.
As with several other thermos containers, I worry about the presence of the plastic bottom. Water from sink washing must get in there, and there is no outlet hole (the 18 oz travel tumblers have a soft rubber bottom and an exit hole so you can push out any water that enters). So, the jury is still out for me on this one.
UPDATE: I've owned the bottle for a while now, and water does not appear to collect in the base. Overall, I'm pleased with its performance, but I am still concerned about the company's lack of attention to how the outer fittings of their bottles will fare over time. In the case of this bottle, the problem appears to be the just-for-looks orange band around the top section of the bottle. Because of the way the stainless steel curves to meet the orange band, dirt built up from hand oil collects there and is difficult to remove. Simple is always better- the value is in the vacuum insulation, and the decorative details from Thermos often get in the way- as if they are added by creative marketing types without any contribution from quality control folks or engineers. Simple heat transfer equations rule insulation design, but that doesn't stop marketing ninnies from messing things up.
What Thermos or the vendor could do to answer my concerns would be to post the temperature retention charts for all models online. So, given the same room temperature, same priming process (pre-warming the bottles), and same initial liquid temperature and quantity, what is the temperature of the water in each after 1 hour, 2, 3, etc up to the claimed limits and beyond? I could do this myself, but I should have to, since the company certainly does so itself. Otherwise, the "12 hour" and "24 hour" claims don't mean much to consumers.
Also, as many reviewers have noted, this is not a mug. I knew this from the photo and reviews, but some may not. It is very much a beverage bottle with a twist-and-seal cap with the standard Thermos pour-channels (twist part way open to poor, limiting heat loss). Not a mug, but really, the mugs lose tremendous amounts of heat by sacrificing lid integrity, anyway, so they only make sense for car commuters. As a bicycle commuter, this is the best option by far.
Description of Thermos E5 20-oz. Travel Mug
THERMOS E20600 BOTTLE, LEAK PROOF TRAVEL BOTTLEDrinkware & Glassware
Sports equipment
- Accessories
- Airsoft
- Apparel
- Archery
- Badminton
- Ballet & Dance
- Baseball
- Basketball
- Billiards
- Boating
- Bowling
- Boxing
- Camping & Hiking
- Casino & Card Games
- Cheerleading
- Climbing
- Cricket
- Curling
- Cycling & Wheel Sports
- Darts
- Disc Sports
- Diving
- Dog Sports
- Equestrian Sports
- Exercise & Fitness
- Fan Shop
- Fencing
- Field Hockey
- Fishing
- Football
- Golf
- Gymnastics
- Hockey
- Hunting
- Kayaking
- Lacrosse
- Lawn Games
- Martial Arts
- Motor Sports
- Paddle Court Sports
- Paintball
- Pilates
- Polo
- Racquetball
- Rodeo
- Rugby
- Running
- RV Equipment
- Scooters
- Shoes
- Skateboarding
- Skating
- Skydiving
- Sledding
- Snow Skiing
- Snowboarding
- Snowmobiling
- Snowshoeing
- Soccer
- Softball
- Sports Medicine
- Squash
- Surfing
- Swimming
- Table Games
- Table Tennis
- Tennis & Racquet Sports
- Track & Field
- Triathlon
- Volleyball
- Water Polo
- Water Sports
- Windsurfing
- Wrestling
- Yoga
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