I use knits with good recovery and nothing too stretchy as it might become baggy and slide off during the day.

Ribbing is perfect for the cuff and C/L's are good for the sleeve.

I measure the circumference of the upper arm and length I want the warmer to be I like it to be from wrist to just above the shirt sleeve

Take your measurements and double the length and subtract 1" from the width
cut 2 pieces for the sleeves from these measurements

For the cuff decide how long you'd like it to be we like about a 3" cuff so my piece will be 6" long.

I use the cuff to help keep the sleeve in place so I make it a tad smaller than the sleeve by subtracting .5" from the sleeve width. If his arm is 10" around, I cut the sleeve to 9" wide and the cuff to 8.5" wide
Hope that makes sense












Viola warm and cozy addition to your favorite t-shirts


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all measurements are approximate and you should adjust them to your comfort level

TFL