Sleeping Bags are available in many sizes, fabric, fill, color, and price.
A bag in the low-middle price range filled with synthetic material is recommended.
Waterproof Pack Cover needs to be large enough to protect items strapped to the exterior of the pack.
A couple of large garbage bags may be suitable for summer hiking in the Sierras, but if multiple rainy days are anticipated a dedicated pack cover is better.
Some backpacks are waterproof, but like a tent, the seams need to be sealed.
Check your cover, or backpack, for “waterproofness” prior to the trek.
So call one of the numbers today and start meeting exciting singles.