Size Chart

Find the Perfect Fit

Soft, stretchy comfort made to grow with your little one.

At Bamsies, our bamboo pajamas are thoughtfully designed to provide the perfect balance of comfort, flexibility, and fit for babies, infants, and toddlers. The naturally soft and stretchy bamboo fabric allows your little one to move freely while staying cozy throughout the day and night.

Our easy-to-follow size chart helps parents quickly find the right pajama size for their child. Whether you’re shopping for bamboo rompers or two-piece pajama sets, you can compare measurements to ensure the best fit for growing little sleepers.

Ultra-soft bamboo fabric for sensitive baby skin

Flexible stretch for growing babies and toddlers

Designed for comfort, sleep, and everyday wear

Easy sizing guide for the perfect fit

Find the Perfect Fit

Snug, safe, and designed for movement.

Short Sleeve Romper Size Chart

Short Sleeve Romper

Conversion: 1 in = 2.54 cm

Units: Measurements are shown in inches (above) and centimeters (below). CM values are converted from inches.

Measurements (Inches)

Measurement	0–3M	3–6M	6–12M	12–18M	18–24M
Length	16.54	17.52	18.50	19.49	20.47
Chest	7.87	8.37	8.86	9.35	9.84
Hip line	7.87	8.37	8.86	9.35	9.84
Waist	7.87	8.37	8.86	9.35	9.84
Bottom width	3.15	3.39	3.64	3.89	4.13
Sleeve length	3.82	4.11	4.41	4.70	5.00
Cuff width	2.64	2.81	2.97	3.14	3.31
Sleeve width	2.95	3.12	3.29	3.46	3.62
Zipper length	11.81	12.78	13.74	14.70	15.67
Neckline width	4.06	4.17	4.29	4.29	4.37
Front neckline	2.17	2.19	2.20	2.22	2.24
Backside neckline	0.71	0.73	0.75	0.77	0.79

Measurements (Centimeters)

Measurement	0–3M	3–6M	6–12M	12–18M	18–24M
Length	42.00	44.50	47.00	49.50	52.00
Chest	20.00	21.25	22.50	23.75	25.00
Hip line	20.00	21.25	22.50	23.75	25.00
Waist	20.00	21.25	22.50	23.75	25.00
Bottom width	8.00	8.62	9.25	9.87	10.50
Sleeve length	9.70	10.45	11.20	11.95	12.70
Cuff width	6.70	7.13	7.55	7.98	8.40
Sleeve width	7.50	7.93	8.35	8.78	9.20
Zipper length	30.00	32.45	34.90	37.35	39.80
Neckline width	10.30	10.60	10.90	10.90	11.10
Front neckline	5.50	5.55	5.60	5.65	5.70
Backside neckline	1.80	1.85	1.90	1.95	2.00

Long Sleeve Romper Size Chart

Long Sleeve Romper

Conversion: 1 in = 2.54 cm

Units: Measurements are shown in inches (above) and centimeters (below). CM values are converted from inches.

Measurements (Inches)

Measurement	0–3M	3–6M	6–9M	9–12M	12–18M	18–24M
Length	20.67	22.32	23.98	25.63	27.28	28.94
Chest	8.27	8.58	8.90	9.21	9.53	9.84
Waistline	8.20	8.51	8.83	9.14	9.46	9.77
Hipline	8.37	8.68	9.00	9.31	9.63	9.94
Thigh	3.92	4.07	4.23	4.39	4.55	4.70
Sleeve width	2.52	2.60	2.68	2.76	2.83	2.91
Sleeve length	10.58	11.52	12.47	13.41	14.36	15.30
Cuff length	2.17	2.24	2.32	2.40	2.48	2.56
Cuff width	1.97	1.97	1.97	2.01	2.01	2.09
Foot length	3.15	3.23	3.31	3.39	3.46	3.54
Foot width	2.36	2.40	2.44	2.48	2.52	2.56
Zip length	16.33	17.69	19.16	20.63	22.11	23.58

Measurements (Centimeters)

Measurement	0–3M	3–6M	6–9M	9–12M	12–18M	18–24M
Length	52.50	56.70	60.90	65.10	69.30	73.50
Chest	21.00	21.80	22.60	23.40	24.20	25.00
Waistline	20.82	21.62	22.42	23.22	24.02	24.82
Hipline	21.25	22.05	22.85	23.65	24.45	25.25
Thigh	9.95	10.35	10.75	11.15	11.55	11.95
Sleeve width	6.40	6.60	6.80	7.00	7.20	7.40
Sleeve length	26.87	29.27	31.67	34.07	36.47	38.87
Cuff length	5.50	5.70	5.90	6.10	6.30	6.50
Cuff width	5.00	5.00	5.00	5.10	5.10	5.30
Foot length	8.00	8.20	8.40	8.60	8.80	9.00
Foot width	6.00	6.10	6.20	6.30	6.40	6.50
Zip length	41.48	44.92	48.66	52.41	56.16	59.90

Two Piece Set (LS) Size Chart

Two Piece Set (LS)

Conversion: 1 in = 2.54 cm

Units: Measurements are shown in inches (above) and centimeters (below). CM values are converted from inches.

Measurements (Inches)

Measurement	12–18M	18–24M	2T	3T	4T
Length	13.58	14.67	15.75	16.83	17.91
Chest	9.65	9.94	10.24	10.53	10.83
Waistline	9.25	9.55	9.84	10.14	10.43
Hipline	9.84	10.43	11.02	11.61	12.20
Thigh	2.91	3.03	3.15	3.27	3.39
Sleeve width	11.44	12.38	13.33	14.27	15.22
Sleeve length	1.38	1.48	1.57	1.67	1.77
Cuff length	2.09	2.15	2.20	2.26	2.32
Cuff width	1.77	1.87	1.97	2.07	2.17
Foot length	2.48	2.60	2.72	2.83	2.95
Foot width	18.33	20.10	21.87	23.64	25.41
Zip length	3.31	3.58	3.86	4.13	4.41

Measurements (Centimeters)

Measurement	12–18M	18–24M	2T	3T	4T
Length	34.50	37.25	40.00	42.75	45.50
Chest	24.50	25.25	26.00	26.75	27.50
Waistline	23.50	24.25	25.00	25.75	26.50
Hipline	25.00	26.50	28.00	29.50	31.00
Thigh	7.40	7.70	8.00	8.30	8.60
Sleeve width	29.05	31.45	33.85	36.25	38.65
Sleeve length	3.50	3.75	4.00	4.25	4.50
Cuff length	5.30	5.45	5.60	5.75	5.90
Cuff width	4.50	4.75	5.00	5.25	5.50
Foot length	6.30	6.60	6.90	7.20	7.50
Foot width	46.57	51.06	55.55	60.05	64.55
Zip length	8.40	9.10	9.80	10.50	11.20

Size Chart

Soft, stretchy comfort made to grow with your little one.

Snug, safe, and designed for movement.

Short Sleeve Romper

Long Sleeve Romper

Two Piece Set (LS)

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