sphere 16cm lightweight

My mom asked to print a ball for inside her crochet work. I couldn't find something i like, so i made this design. Made it so it wouldn't cost to much filament and didn't need support. It's 16cm in diameter, it should work in different sizes I'm sure.It uses 50gr of filament. WARNING: IT WIL NOT PRINT PERFECTIt wil have some defects here and there, but it should be pretty sturdy! I printed it once and it came out better then expected.The very top still could fail without supports, but fixing it is easier then work with support i guess. Feel free to look at my profile, i have more functional on there!