The purpose of this study is to survey and analyze the general conditions of infants' apparel brands in Korea, review the sizes and specifications of each brand, analyze the differences and correlations among brands, and thereby, present the reasonable sizes and specifications for infants' apparels in consideration of domestic and foreign specifications and infants' health conditions. for this purpose, 13 brands manufacturing the apparels for the infants aged from 0 to 4 were sampled, and their design directors and outside pattern suppliers were surveyed through direct interviews. The collected data were processed for frequencies, mean, median and mode. The results of this study can be summarized as follows; 1. The sample infants' apparel brands were mostly launched as national brands in 1990's, while their target ages were diverse : 0 $\sim$ 72 months, 0 $\sim$ 36 months, 0 $\sim$ 48 months, 0 $\sim$ 60 months, 12 $\sim$ 24 months, etc. 2. More brands were restructuring the pattern suppliers' sizes and specifications rather than developing them directly, which suggests that most of infants' brands depend much on pattern suppliers. 3. Infants' apparel brands were presenting the 'space suites' sized from #60 to #90 because consumers prefer those space suites distinct in their upper and lower parts and convenient for their toddlers aged 36 months or older. The brands were setting the sizes for 6 parts: total length, breast, sleeve length, hip, hip height, leg. 4. The sizes for infants' one-pieces were #70, #75, #80, #85, #90, #95, #100, #110 and #120, while their subsizes were determined for 4 parts: total length, breast, sleeve length, hip.