Meet the ThruBottle 1000 - an ultralight one liter bottle with a 28mm neck that is designed to be reused, with a few upgrades. The ThruBottle 1000 is the same slim 1 liter bottle made of safe-to-reuse HDPE as our V1, but weighs only 63 grams and features a much more squeezable body. Now assembled in the US with US components, the ThruBottle 1000 features more prominent embossed measurement lines that won&';t rub off and an updated pull tag. This bottle is designed with ultralight backpackers in mind and is constructed from safe, durable materials intended for long-term use - even through long periods of sun exposure and rough conditions. The ThruBottle utilizes the same universal thread as the Vecto, ensuring its 28mm neck will be compatible with a wide range of 28mm filters. Features: Attaches to filters with a 28 mm thread, such as the Sawyer Squeeze, Mini, or Micro, the LifeStraw Flex, and the HydroBlu VersaFlow Squeezable body One liter capacity bottle with a slim profile that fits easily into backpack side pockets and shoulder strap pockets alike Ultralight and durable Ounce and milliliter measurement lines Tethered cap Reinforced nylon pull tag near the cap for easy pull from side pockets Made of BPA, BPS, and BPF free HDPE Curbside recyclable (remove string) Specs: Capacity : 1 liter / 32 oz Size: 12x2.9x2.9 in / 30.5x7.4x7.4 cm Weight: 63g/2.2oz Operational temperatures: 32AdegF (0AdegC) to 175AdegF (80AdegC). This bottle can hold liquids rated up to 212AdegF, but we recommend keeping exposure times short to prevent material fatigue. BPA, BPF and BPS free Made from domestic and global components, assembled in the USA