@tundradefender: This is the first iteration of the Tundra Defender Water Bottle. I designed this water bottle to have all the premium features. -durable double wall stainless steel -vacuum sealed insulation to keep water cool -included heavy weight carabiner -wrist strap for added security -25oz capacity -extended neck for strong grip I hope someone will find this product useful, and I can continue to make improvements. I already have a lot of ideas in mind. Thanks #waterbottle #selfdefense #gym #newyork #usa