https://www.rei.com/product/220438/...001&cm_mmc=aff_AL-_-2467-_-2906-_-3402&avad=2 REI Members: 40-Ounce Stanley Quencher H2.0 FlowState Tumber (various colors) for $45 - 20% when you apply promo code MEMBER23 during checkout = $35.99. Shipping is free.