I use 2 different bags:

1) plastic -- FoodSaver, started with the individual bags and have moved to rolls. Always have the 11" and 8" around. Great for freezing pre cook as well. https://www.amazon.com/FoodSaver-BPA-Free-Multilayer-Construction-Preservation/dp/B001U05R16/ref=sr_1_16

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2) Silicone -- for all shorter cooks I use silicone bags and water displacement method to "seal". You don't really need the ziplock as water pressure works. Nice thing is if any air bubble come in they go right out the top. SIOchef has 1 gallon and 2 gallon bags: https://www.amazon.com/SIOchef-Premium-Silicone-Sous-Vide/dp/B07BGJZ2WC/ref=sr_1_1