Just received my Spigen case and the S21 Ultra SPen is still on the way, somewhere... So I tried to fit in the Note SPen which is smaller and it stayed there.
Which case to choose for Samsung Galaxy S21 Ultra? Spigen cases List - BLOG SPIGEN.pl
Proteggi obiettivo Spigen Optik per Samsung Galaxy S21 Ultra 5G (6.8 ") -vetro temperato Premium per una protezione extra antigraffio _ - AliExpress Mobile
Galaxy S21 Ultra 5G Case Liquid Air - Spigen.com – Spigen Inc