Thule 13 Hard sided or Case Logic 15.6 Heather Fabric Laptop Attaché $14.99

https://meh.com/
The 13" Thule features a firm exterior; the Case Logic is softer (but padded).
Despite having different brand names, they’re both made by the same company.
Model: L4PT0P-0-TH3-P0P5.
Price comparison : Thule 13 amazon : $46