It's very thin so you're right. However, it turned out to be weak, uncomfortable to use and fell off the phone. So there's probably a better option. But if thinness and those dimensions are what you're after, you've got 5 spares if it's dropped and cheap, so it might be for you.
Laptop Webcam Cover Slide: Ultra Thin Round Hole Camera Blocker for MacBook, PC & More (3 Black + 3 White)
11 Review
6 Pack Webcam Cover Black - NanoTech Reusable Adhesive Protection for Laptops, Smartphones, Tablets, Desktops - Works on Any Electronics Surface - Safeguard Your Privacy
11 Review
imluckies Webcam Cover Slide - Slim Metal Camera Cover for Laptop, MacBook, iPad, iMac, PC - 6 Pack, Ultra-Thin 0.023 inch, Privacy Protection
12 Review
Blocker Computer MacBook Notebook ProtectorοΌ6
10 Review
16" Notebook Apple MacBook Pro 16 Late 2019 3072x1920, Intel Core i7 2.6 GHz, RAM 16 GB, DDR4, SSD 512 GB, AMD Radeon Pro 5300M, macOS, MVVL2LL/A, silver, English layout
55 Review
Backpack Xiaomi Mi City Backpack 2 dark gray
38 Review
Graphic Tablet XP-PEN Deco 01 V2 Black
62 Review
Xiaomi Classic Business Backpack Blue Backpack
56 Review