Advanced crocheter, worked in increaseed rows,
Pattern can be worked in any weight yarn, Model is size large, pattern was #1 weight Yarn Bee Wrapsody Rainbow, 4 mm hook,or size needed for larger yarn/thread. about 1700 yards, Starting chain 88, Larger Thread/yarn will need less, or can add more chains for comfortability, muliples of 4.
Size depends on model, length, width.
Arm hole assembly video tutorial listed in pattern.