what is worsted weight cotton yarn

{"cid":"91217815","title":"200G=219Y 70% Cotton 30% Nylon Blend Yarn Chunky Tube Cotton Yarn With Good Elasticity","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ec\/51\/b7e01e90e125952a976e2598a415-200x200-1.jpg","attrs":{"Price":"USD1-1.15\/ball","Brand Name":"Hoyia cotton nylon","Model Number":"H12608 Amigurumis yarn","Delivery Time":"15days","Place of Origin":"China","Packaging Details":"200gram 219YDS","shrinkage":"Low Shrinkage","material":"70% Cotton 30% Nylon","style":"Chunky Tube Cotton Yarn","elasticity":"Good Elasticity","quality":"Amazon Top Quality","weight":"Worsted-weight Medium #4","function":"Amigurumis DIY Yarn","Samples":"50gram Free"}}

{"cid":"91200703","title":"100 Cotton Dyed Uniform Fabric 390gsm 150CM Windproof Oilproof","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/93\/ec\/c9531b9c1efee5ebe972f1a0b1d9-200x200-1.jpg","attrs":{"Brand Name":"IDEAR","Minimum Order Quantity":"1000meters","Delivery Time":"10~15 work days","Certification":"OEKO-TEX STANDARD 100","Place of Origin":"Jiangsu China","Payment Terms":"L\/C, D\/A, D\/P, T\/T,","Supply Ability":"1000000","Packaging Details":"Rolled, baled or as the client\u2019s request","Product Name":"100 Cotton Uniform Dyed Fabric 390gsm 150CM Windproof Oilproof Waterproof","Material":"100% Cotton","Weight":"390 GSM","Finish":"Waterproof,Oilproof, Windproof","Width":"150cm","Use":"Suiting, Uniform Cloth Fabric, Trousers, etc"}}