https://www.c-sharpcorner.com/article/agile-story-point-estimation-techniques-t-shirt-sizing/
https://www.c-sharpcorner.com/article/agile-story-point-estimation-techniques-planning-poker/
T-Shirt Sizing
T-shirt Sizing is one of the Story points sizing technique to estimate user story usually used in agile projects. It's a relative Estimation Technique.
Rather than using a number of planning pokers, here, Items are classified into t-shirt sizes: XS, S, M, L, XL.
The term originates from the way T-shirt sizes are indicated in the US. Rather than having T-shirts in sizes 4, 5, 6 etc, there are just a few sizes: Small (S), Medium (M), Large (L) and Extra Large (XL) and so on.
Planning Poker
- Each team member comes up with the size of the story related to the reference user story.
- Team members show the card to everyone.