If you expect daytime high temperatures in your area of greater than 90 degrees F, please select this option prior to checkout. When this option is selected we will include cooling packs to your order to ensure your new fish arrive to you safely. This up-charge is added to your shipping costs and will be treated the same as your regular shipping costs. If daytime temperatures in your area are greater than 90 degrees F and this option is not selected, our Live Arrival Guarantee will be voided. If temperatures are above 100 degrees F in your area, please consider waiting for cooler weather before placing your order.