Im So Fly Men's Boxer Briefs

Name: Im So Fly Men's Boxer Briefs
Brand: Hatley Little Blue House
SKU: 671374817817
Price: 11.0 USD
Availability: InStock

$11.00 $5.50

~~$22.00~~ $11.00

Pay in 4 interest-free installment of with Learn more

15 in stock

Colors

View Buck Naked Men's Boxer Briefs - Deer head illustration with the words "BUCK NAKED" above

View Nice Bass Men's Boxer Briefs - Fish illustration with the words "NICE BASS" above

View Kiss my Bass Men's Boxer Briefs - Illustrated fish with floral pattern and the words "Kiss My Bass

View Size Matters Men's Boxer Briefs - Blue square with a yellow ruler and white text reading "SIZE MATTERS

View Im So Fly Men's Boxer Briefs - Abstract colorful doodle with red "Fly" text and small "I'M SO" above

View Shut the Duck Up Men's Boxer Briefs - Cartoon duck with the text "Shut the Duck Up!

View Men's Bass Man Boxer Brief - Blue graphic with a fish illustration and the words "I'M A BASS MAN" in red and white

Size

Size Chart

Finding the right size

To get an accurate body measurement, do not measure over clothing.

Chest: With your child's arms out, measure around the fullest part of the chest.
Waist: Measure around the natural waistline.
Hip: Measure around the fullest part of the hips and seat.
Height: Measure from the top of the head to the ground, without shoes.

When purchasing kid's pajamas, we recommend buying a size up from the age of the child (example: a four-year-old would take a size 5).

Baby

The first column has the US/UK size, the second column has the corresponding EU size, the third column has the weight associated to that size and the fourth column has the length
US / UK	WEIGHT	LENGTH
Up to 5lbs	Up to 5lbs Up to 2.3kg	Up to 17.00" Up to 43cm
Up to 7lbs	Up to 7lbs 2.3 - 3.2kg	Up to 18" Up to 46cm
0-3m	7 - 12lbs 3 - 5.4kg	18.00" - 22.75" 46cm - 58cm
3-6m	12 - 16lbs 5.4 - 7.3kg	22.75" - 26.75" 58cm - 68cm
6-9m	16 - 21lbs 7.3 - 9.5kg	26.75" - 28.00" 68cm - 71cm
6-12m	17 - 25lbs 7.7 - 11.3kg	26.75" - 29.25" 68cm - 74cm
9-12m	21 - 25lbs 9.5 - 11.3kg	28.00" - 29.25" 71cm - 74cm
12-18m	25 - 27lbs 11.3 - 12.2kg	29.25" - 31.00" 74cm - 79cm
18-24m	27 - 30lbs 12.2 - 13.6kg	31.00" - 33.00" 79cm - 84cm

Toddler

The first column has the US/UK size, the second column has the weight associated to that size and the third column has the length
US / UK	WEIGHT	LENGTH
2T	30 - 33lbs 13.6 - 15kg	33.00" - 35.75" 84cm - 91cm
3T	33 - 36lbs 15 - 16.3kg	35.75" - 39.00" 91cm - 99cm
4T	36 - 39lbs 16.3 - 17.7kg	39.00" - 41.75" 99cm - 106cm

Kids

The first column has the US/UK size, the second column has the corresponding EU size, the third column has the chest measurement associated to that size, the fourth column has the waist measurement, the fifth has the hips measurement, and the sixth has the height measurement
US/UK	EU	CHEST	WAIST	HIPS	HEIGHT
2	89	21.0" 53cm	20.5" 52cm	21.0" 53cm	35.0" 89cm
3	98	22.0" 56cm	21.0" 53cm	22.0" 56cm	38.50" 98cm
4	104	23.0" 58cm	21.5" 55cm	23.0" 58cm	41.0" 104cm
5	110	24.0" 61cm	22.0" 56cm	24.0" 61cm	43.25" 110cm
6	116	25.0" 64cm	22.5" 57cm	25.0" 64cm	45.75" 116cm
7	122	26.0" 66cm	23.0" 58cm	26.0" 66cm	48.0" 122cm
8	128	27.0" 69cm	23.5" 60cm	28.0" 71cm	50.25" 128cm
10/9-10	134-140	28.5" 72cm	24.5" 62cm	29.0" 74cm	52.75" - 55.00" 134cm - 140cm
12/11-12	146-152	30.0" 76cm	25.5" 65cm	31.0" 79cm	57.50" - 60.00" 146cm - 152cm
14	155-160	31.5" 80cm	26.5" 67cm	32.5" 83cm	61.0" - 63.0" 155cm - 160cm

Kids' Rain Boots

The first column has the US size, the second column has the corresponding UK size, the third column has the corresponding EU size, the fourth column has the age associated to that size and the fifth column has the insole length
US	UK	EU	AGE	INSOLE LENGTH
4 Toddler	3 Toddler	20	1 - 2	5.5" 140mm
5 Toddler	4 Toddler	21	1.5 - 2	5.7" 145mm
6 Toddler	5 Toddler	22	2 - 3	6" 152mm
7 Toddler	6 Toddler	23	2.5 - 4	6.25" 159mm
8 Toddler	7 Toddler	24	3.5 - 5	6.54" 166m
9 Toddler	8 Toddler	25	4.5 - 5	6.8" 173mm
10 Toddler	9 Toddler	27	5 - 6	7.1" 180mm
11 Kids	10 Kids	28	5.5 - 7.5	7.36" 187mm
12 Kids	11 Kids	30	6 - 7.5	7.64" 194mm
13 Kids	12 Kids	31	7 - 8	8" 204mm
1 Kids	13 Kids	32	7.5 - 8.5	8.4" 213mm
2 Kids	1 Kids	33	8.5 - 9.5	8.66" 220mm
3 Kids	2 Kids	34	8-10	8.94" 227mm
4 Kids	3 Kids	36	10-12	9.22" 234mm

Kids' Flip Flops

The first column has the US/UK size, the second column has the corresponding EU size, the third column has the age associated to that size and the fourth column has the insole length
US/UK	EU	AGE	INSOLE LENGTH
S (Size 7)	24	2.5 - 4	6.25" 160mm
M (Size 9)	26	4.5 - 5	6.75" 170mm
L (Size 11)	29	5.5 - 7.5	7" 180mm
XL (Size 13)	31	7 - 8	7.75" 195mm

Kids' Slippers

The first column has the US/UK size, the second column has the age associated to that size and the third column has the insole length
US/UK	AGE	INSOLE LENGTH
S (Size 5-7)	2.5 - 4	6.75" 173mm
M (Size 8-10)	4.5 - 5	7" 180mm
L (Size 11-13)	5.5 - 7.5	7.25" 185mm
XL (Size 1-2)	7 - 8	7.5" 193mm

Kids' Robes

As our kids' robes are unisex, sizing is based on a boy’s average proportions (it has to fit him too!) To select the right size for a girl, choose one size smaller than normal. Ex: if she normally wears medium, select a small.

The first column has the US/UK size, the second column has the chest measurement associated to that size, the third column has the waist measurement, the fourth has the hips measurement, and the fifth has the height measurement
US/UK	CHEST	WAIST	HIPS	HEIGHT
2 S (AGES 2-3)	21.0" 53cm	20.5" 52cm	21.0" 53cm	35.0" 89cm
3 S (AGES 2-3)	22.0" 56cm	21.0" 53cm	22.0" 56cm	38.0" 97cm
4 M (AGES 4-5)	23.0" 58cm	21.5" 55cm	23.0" 58cm	41.0" 104cm
5 M (AGES 4-5)	24.0" 61cm	22.0" 56cm	24.0" 61cm	44.0" 112cm
6 L (AGES 6-7)	25.0" 64cm	22.5" 57cm	25.0" 64cm	47.0" 119cm
7 L (AGES 6-7)	26.0" 66cm	23.0" 58cm	26.0" 66cm	50.0" 127cm
8 XL (AGES 8-9)	27.0" 69cm	23.5" 60cm	28.0" 71cm	53.0" 135cm
10 XL (AGES 8-9)	28.5" 72cm	24.5" 62cm	29.0" 74cm	56.0" 142cm

Adult Union Suits

As our adult union suits are unisex, sizing is based on a man’s average proportions (it has to fit him too!) To select the right size for a woman, choose one size smaller than normal. Ex: if she normally wears medium, select a small.

The first column has the size, the second column has the chest measurement associated to that size, the third column has the waist measurement, and the fourth has the suggested height for that size
SIZE	CHEST	WAIST	SUGGESTED HEIGHT
XS	32" - 34" 81cm - 86cm	28" - 30" 71cm -76cm	5' - 5'2" 152cm - 157cm
S	34" - 36" 86cm - 91cm	30" - 32" 76cm - 81cm	5'2" - 5'6" 157cm - 168cm
M	38" - 40" 97cm - 102cm	32" - 33" 81cm - 84cm	5'6" - 5'9" 168cm - 175cm
L	42" - 44" 107cm - 112cm	33" - 34" 84cm - 86cm	5'9" - 6' 175cm - 183cm
XL	46" - 47" 117cm - 119cm	36" - 38" 91cm - 96cm	5'11" - 6'2" 180cm - 188cm

Women

The first column has the US/CAN size, the second column has the corresponding UK size, the third column has the corresponding EU size, the fourth column has the bust measurements associated to that size, the fifth has the waist measurements associated to that size and the sixth column has the hip measurement
SIZES			BODY MEASUREMENTS
US/Can	UK	Europe	Bust	Waist	Hip
2 (XS)	6	34	33 1/2" 85cm	25 1/2" 65cm	36 1/2" 93cm
4 (S)	8	36	34 1/2" 88cm	26 1/2" 67cm	37 1/2" 95cm
6 (S)	10	38	35 1/2" 90cm	27 1/2" 70cm	38 1/2" 98cm
8 (M)	12	40	36 1/2" 93cm	28 1/2" 72cm	39 1/2" 100cm
10 (M)	14	42	37 1/2" 95cm	29 1/2" 75cm	40 1/2" 103cm
12 (L)	16	44	39" 99cm	31" 79cm	41 3/4" 106cm
14 (L)	18	46	40 1/2" 103cm	32 1/2" 83cm	43" 109cm
16 (XL)	20	48	42 1/4" 107cm	34 1/2" 88cm	44 3/4" 114cm
18 (XL)	22	50	44" 112cm	36" 91cm	46 3/4" 119cm
20 (XXL)	24	52	45 3/4" 116cm	37 3/4" 96cm	48 3/4" 124cm

Womens' Flip Flops

The first column has the US size, the second column has the corresponding UK size, and the third column has the corresponding EU size
US	UK	EU
6	4	37
7	5	38
8	6	39
9	7	40
10	8	41

Womens' Slippers

The first column has the size, the second column has the corresponding US size, the third column has the corresponding UK size, and the fourth has the corresponding EU size
Size	US	UK	EU
S	5-6	3-4	36-37
M	7-8	5-6	38-39
L	9-10	7-8	40-41
XL	11-12	9-10	42-43

Men

The first column has the size, the second column has the chest measurement associated to that size, and the third column has the waist measurement
SIZE	CHEST	WAIST
S	34" - 36" 86cm - 91cm	30" - 32" 76cm - 81cm
M	38" - 40" 97cm - 102cm	32" - 33" 81cm - 84cm
L	42" - 44" 107cm - 112cm	33" - 34" 84cm - 86cm
XL	46" - 47" 117cm - 119cm	36" - 38" 91cm - 96cm
XXL	48" - 50" 122cm - 127cm	40" - 42" 102cm -107cm

Dogs

The first column has the size, the second column has the chest measurement associated to that size, the third column has the back length measurement, and the fourth column has examples of breeds the size should fit
SIZE	CHEST	BACK LENGTH	BREED
XS	11" - 14" 28cm - 35.5cm	9" - 10" 23cm - 25.5cm	Yorkshire Terrier, Chihuahua
S	15" - 18" 38cm - 45.5cm	11" - 13" 28cm - 33cm	Shih Tzu, Miniature Schnauzer
M	19" - 24" 48cm - 61cm	14" - 18" 35.5cm - 45.5cm	Beagle, Cocker Spaniel
L	25" - 28" 63.5cm - 71cm	19" - 21" 48.5cm - 53.5cm	German Shorthaired Pointer, Boxer
XL	29" - 34" 73.5cm - 86.5cm	22" - 25" 55.5cm - 63.5cm	Labrador, Golden Retriever, Doberman Pinscher

Kombi Gloves and Mitts for Children (2 - 6 years)

Size	Age	Hand Circumference at Knuckles	Hand Length
S	2/3	11.1 - 12.5cm	10 - 11.2cm
M	4/5	12.5 - 13.5cm	11.2 - 12cm
L	5/6	13.5 - 14.5cm	12 - 12.8cm

Kombi Gloves and Mitts for Juniors (6 - 14 years)

Size	Age	Hand Circumference at Knuckles	Hand Length
XS	6/7	14.5 - 15.2cm	12.8 - 13.7cm
S	7/8	15.2 - 15.9cm	13.7 - 14.6cm
M	9/10	15.9 - 16.6cm	14.6 - 15.5cm
L	11/12	16.6 - 17.2cm	15.5 - 16.4cm
XL	13/14	17.2 - 17.8cm	16.4 - 17.3cm
S/M	3/5X	11.8 - 13cm	10.6 - 11.6cm
L/XL	5/6X	14 - 15cm	12.4 - 13.5cm

Kombi Headwear (6 to 24 months)

Age	Head Circumference
0 - 3m	30.5 - 35.5cm
3 - 9m	35.5 - 45.5cm
9 - 18m	45.5 - 46.5cm
18 - 24m	46.5 - 48.75cm

S M L XL

Product variants

Quantity

Features

Elastic waistband
Stretchier, more fitted style
Seamless graphics
Exclusive Little Blue House print
Machine Washable

94% Cotton, 6% Spandex.

Product code: BXCIFLY001

Shipping

All US orders ship from our Montreal, QC warehouse. We ship all orders within 2 business days.

Shipping Policy & Rates

U.S. Postal Service (USPS)

Under $99 $9

$99+ Free

Estimated delivery: Approx. 5–7 business days

^*Delivery time is the estimated transit time after your order leaves our facility. We aim to ship all orders within 2 business days.

You can see a detailed breakdown of the shipping times by region here.

Returns & Exchanges

Return Window
You have 30 days from the date of delivery to initiate a return.

Refund Method (Online Orders)
If you purchased your item online, refunds will be issued to the original payment method used at checkout.

Online Purchases

Returns: You can return items either online or in-store.
Exchanges: To exchange an online purchase, please return the original item and place a new order.

In-Store Purchases
In-store purchases can only be returned or exchanged at a store location.

Please note that items labeled "Final Sale" are non-returnable.

For detailed return procedures and additional information, please refer to our Returns and Exchanges page.

View full details

Elevate your undergarment game with our Im So Fly Men's Boxer Briefs. Crafted from a breathable blend of cotton and spandex, designed to keep you comfortable and 'fly' all day long. These briefs offer a snug fit without constriction, perfect for the man on the move. The stretch fabric ensures you have the freedom to soar through your daily activities.

Join the Club

& Get Rewarded!

Country/region

Country/region

Im So Fly Men's Boxer Briefs