Hydro Flask Insulated Stainless Steel Water Wide Mouth 40-Ounce Bottle – Link 
Amazon currently has this very highly rated Hydro Flask Insulated Stainless Steel Water bottle marked down to just $26.70! These typically go for about $30-$35.
- Double wall vacuum insulated stainless steel water bottle keeps drinks cold for up to 24 hours and hot for up to 6 hours
- Premium grade 18/8 Stainless Steel BPA free Sports Bottle
- High quality colorful powder-coated matte finish exterior that never sweats
- A great way to give back Hydro Flask donates 5% back to a charity of your choice
- The Lifetime Warranty makes Hydro Flasks the best water bottles