New Balance Balance 323. Available in child's sizes. These trainers by New Balance prove that sportswear can be chic and trendy! The 323 is the perfect combination of comfort and style.Dare to try out this pair of trainers that defy the odds! Uppers: 100% other materials. Lining: 100% textile. Cushioning: 100% textile. Sole: 100% rubber. Fastening: laces and touch 'n' close.