Less Weight. More Miles.Built to go wherever the day takes you our 40 oz Lightweight Wide Mouth Trail Series™ bottle provides a substantial amount of hydration. Thanks to an innovative stainless steel design it’s engineered to deliver the same cold refreshment you expect from Hydro Flask but is 20% lighter than our other 40 oz bottles.Lightweight hydration to keep you going20 percent lighter than other Hydro Flask 40 oz Wide Mouth bottles24 hours cold 12 hours hotTempShield®? double-wall vacuum insulationPure taste no flavor transferDurable stainless steelFlexible perforated strap and aluminum pivots to minimize weightBottle fits most backcountry water filtersWide MouthNot for use on a stove in a microwave or freezerconst excludeEngravingListObserver = new MutationObserver(() => {if (document.querySelectorAll('.product-options-wrapper .swatch-option-selected').length) {if (!document.querySelector('.product-options-wrapper')) {excludeEngravingListObserver.disconnect();return;}const swatchesList = document.querySelectorAll('.product-options-wrapper .m-swatch-group__container .m-swatch');const productOptionsWrapper = document.querySelector('.product-options-wrapper');const excludeEngravingList = ['Celestine'];swatchesList.forEach(el => {if (excludeEngravingList.includes(el.getAttribute('data-option-label'))) {el.classList.add('exclude-inline-engraving-main-swatches');}el.addEventListener('click' () => {if (el.classList.contains('exclude-inline-engraving-main-swatches')) {document.querySelector('.pdp-grid-info .icomoon-engrave') ? document.querySelector('.pdp-grid-info .icomoon-engrave').parentElement.style.display = 'none' : ''; } else {document.querySelector('.pdp-grid-info .icomoon-engrave') ? document.querySelector('.pdp-grid-info .icomoon-engrave').parentElement.style.display = 'flex' : '';}});});if (document.querySelector('.swatch-option-selected').classList.contains('exclude-inline-engraving-main-swatches')) {document.querySelector('.pdp-grid-info .icomoon-engrave') ? document.querySelector('.pdp-grid-info .icomoon-engrave').parentElement.style.display = 'none' : ''; } else {document.querySelector('.pdp-grid-info .icomoon-engrave') ? document.querySelector('.pdp-grid-info .icomoon-engrave').parentElement.style.display = 'flex' : ''; }excludeEngravingListObserver.disconnect();}});if (window.hyva) {excludeEngravingListObserver.observe(document.querySelector('.product-options-wrapper') {childList: true subtree: true});}