children‘s underwear， boys ‘boy cotton class a cotton boyshorts， boys ‘middle and big children‘s boxer shorts that do not pinch the butt

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size m weight 10.00 kg-14.50 kg height 90-105cm(M码 体重20-29斤 身高90-105cm) size l: weight 30–39 jin, height 105–115cm(L码 体重30-39斤 身高105-115cm) xl size: weight 40–49 jin, height 115–125cm(XL码 体重40-49斤 身高115-125cm) size xxl, weight 50-60 jin, height 125-135cm(XXL码 体重50-60斤 身高125-135cm) 3xl size: weight 60–70 jin, height 135–145cm(3XL码 体重60-70斤 身高135-145cm) 4xl size: weight 70–80 jin, height 145–155cm(4XL码 体重70-80斤 身高145-155cm) 5xl: 80–110 jin (approx. 88–121 lbs) in weight, 155–170cm (approx. 5’1”–5’7”) in height(5XL码 体重80-110斤 身高155-170cm)