♦This garment is made of pure Silk Charmeuse fabric,heavier silk fabric brings a regal majesty to this comfortable set of men's pajamas; The "hand" of silk is exceptionally smooth and flowing. ♦It is so light and soft that when you run it across your skin, it feels like a gentle breeze or fresh stream of water. Not only beautiful,it is also healthy! It is particularly good for those who have allergies, arthritis or other ailments because it is naturally hypoallergenic material. SIZE CHART: Size Medium : Height Range fits 5´3"-5´9"(160cm-175cm) and Weight Range fits 143 lbs-154 lbs(65kg-70kg); Size Large : Height Range fits 5´7"-5´11"(170cm-180cm) and Weight Range fits 154 lbs-172 lbs(70kg-78kg); Size X-Large : Height Range fits 5´9"-6´2"(175cm-188cm) and Weight Range fits 165 lbs-194 lbs(75kg-88kg); Size XX-Large : Height Range fits 5´10"-6´5"(178cm-195cm) and nbsp; Weight Range fits 194 lbs-212 lbs(88kg-96kg);