TUF-TEX Premium Helium Quality Balloons are the best balloon for outdoor use - PERIOD! These 17" jumbo round, yellow "smiley face" balloons are produced from high quality natural latex which provides a long lasting float time of 35-50 hours.
Actual flying time will vary depending on temperature and atmospheric conditions. When temperatures exceed 75 degrees try only inflating the balloons to 85-90% to leave room for expansion and less breakage. TUF-TEX natural latex balloons are biodegradable.