354 ml. Cold for 24 hours. Hot for 12 hours. Double wall vacuum sealed. 18/8 stainless steel. Great for school & sports! Leak-proof lid. Textured soft grip & easy carry loop. Large opening for ice & easy cleaning. Small opening for drinking. www.mannahydration.com. Instagram: (at)mannahydration. (hashtag)mannahydration. BPA & lead free. Made in China.