Euler's Identity Math Water Bottle Gift

Easy to carry and stylish in appearance, you will find the perfect work, gym, or jogging partner in this fabulous Euler’s Identity Stainless Steel Water Bottle. The wide bottle top allows easy refilling, while top-grade stainless steel gives it a robust make. Suitable for both hot and cold drinks, you can carry your water, coffee, tea, or even protein shake to the gym in this smart-to-look-at and highly utilitarian bottle.