100w PD powerbank at a good price.Unusual shape.
Product website: https://us.baseus.com/p/baseus-blade-usb-c-100w-20000mah-pow…
Reviews:
https://www.xda-developers.com/baseus-blade-100w-power-bank-…
https://www.chargerharbor.com/review-baseus-blade-20000mah-1…
https://www.notebookcheck.net/100-W-Baseus-Blade-power-bank-…
That is an usual shape. Obviously no good for pockets but perhaps not bad for backpacks. Probably distributes the weight a little better than a solid brick.