Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No proper sizing chart

I can not give a complete review for these socks as they are way too big to wear comfortably with athletic shoes. The generic chart by Amazon was not specific enough, so I found the Buster Brown chart at the seller's website for these socks. I wear a size 8 athletic shoe, so a size 10 sock was ordered as specified by the chart.The size 10 socks received were more for a person with a size ten shoe, not size 8. I don't believe the size 9 would have fit much better. I sent them backThe material quality is very cheap for the price. It's the exact material used for cotton underwear and very thin. They don't look like they are going to hold up to many washings