Chest access at collar bone to reach PORT without removing shirt
(2) interior pockets at hip, to hold devices or personal items
Wide 3/4 length sleeves, easy to cuff or push-up like popsicle
Back pleat for better range of motion; sit, stretch without garment "riding-up"
Long curved hem to keep waistband and backside covered
Slits to thread lines or hook glasses
Side seam hooks to organize tubes