Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Is this leak-proof?
Document: And I love the deep blue color instead on the standard "black".Thermos Stainless King SK1005MB4 16-Ounce Leak-Proof Travel Mug, Midnight Blue
I bought this for my husband. With his work schedule getting a hot dinner was not possible unless it was take out. Now I can send him hot soup and/or hot chocolate and it stays hot all night long. Also, with the leak proof system, we don't have to worry about accidents in his lunch carry case. This is great for him and I am so glad I bought it.
I wanted a thermos to bring at least a liter of tea/coffee with me to campus. As described this thermos is approximately 1.2 liters which is perfect for me. Naturally this thermos is big, just over 1 ft in length and about 3.5" in diameter at the bottom. It doesn't fit in my car's cupholder, but it is also leak proof so I can just lay it on the floor or seat.
So my husband and I knew we wanted the insulated stainless steel Thermos bottles as well. A couple of things we wanted:  1) stainless steel, 2) sweat/condensation-proof, 3) keeps water ice cold for hours on end, 4) easy access to the water, 4) simple design, and 5) leak-proof. The Thermos brand delivers on all levels- we are literally impressed and shocked at the performance of this King bottle (and our children's bottles).
keeps coffee hot, and hard to drink for quite a while, heavy duty and spill proof lid is good for all occasions.
Holds 40 ounces of liquid! I get coffee refills at the gas station for under 2 dollars. Decently sturdy-not dent proof by a long shot. I use it to hold coffee while i'm on my forklift. Small cap doubles as lid.
Just what I wanted for my coffee or tea. Spill proof, and the insulation is fantastic. Will keep hot beverages hot and cold ones cold for at least a day when closed.Great size, holds just the right amount for a day's worth of coffee for me. Yes, it is big and the handle clanks when you carry it, but I like both of those things. This is a serious Thermos.Also used it to take chili home from a friend's house.
This Thermos Stainless King Beverage Bottle is really excellent at keeping hot drinks steaming hot for about 12 hours, and quite warm for about 24 hours. One thing I really like is how "drip-proof" this thermos is. The twist plug really works nicely since you don't need to remove it to pour, you just loosen it some and tip the thermos over the cup, then tighten the plug back up snugly. It never spills even if the thermos tips on its side.
Made with TherMax double wall vacuum insulation for maximum temperature retention, hot or coldDesigned to keep liquids hot for 12 hours, and cold for 24 hoursUnbreakable stainless-steel interior and exterior keep bottle cool to touch with hot liquids and sweat proof with cold liquidsLid doubles as insulated serving cup; twist and pour function allows you to pour without moving the stopperWith an ample 40-ounce (1-1/5 liter) capacity, the bottle offers plenty of sustenance on the go.
No, the outside does not get hot...if it does, the thermos is defective. This doesn't leak at all...if it does, it's defective.
Answer: My experience is that it is leak-proof.  I carry it on my motorcycle in a horizontal position, and my bike produces a lot of vibration in addition to the normal vibrations from the road, bumps, etc., and I have never had the Thermos leak yet.  I've used it for about 2 years now.