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Popular searches

Pride 2026New ArrivalsIconic BriefsEssential Soft BrasReturns & Exchanges

Popular products

Essentials Soft Bra - X= Black
Essentials Soft Bra
X= Black
Sale price$38.00
Essentials Soft Bra +18
Iconic Briefs - X= Black-Underwear-TomboyX
Iconic Briefs
X= Black
Sale price$26.00
Iconic Briefs +16
Racerback Soft Bra - Black Rainbow Logo
Racerback Soft Bra
Black Rainbow Logo
Sale price$38.00
Racerback Soft Bra +13
Iconic Briefs - Black Rainbow Logo
Iconic Briefs
Black Rainbow Logo
Sale price$26.00
Iconic Briefs +16

HSA and FSA Eligible Period Underwear

Did you know you can use your FSA / HSA card to buy any of the period underwear on our site? Just add to your cart, then select "Sika Health" as your payment method at checkout to check out seamlessly with your HSA / FSA dollars. For HSA / FSA FAQs, read more here. 
49 products

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Featured Most relevant Best selling Alphabetically, A-Z Alphabetically, Z-A Price, low to high Price, high to low Date, old to new Date, new to old

Sort by

Featured Most relevant Best selling Alphabetically, A-Z Alphabetically, Z-A Price, low to high Price, high to low Date, old to new Date, new to old
First Line Period 9" Boxer Briefs 3-Pack - Rainbow X=
First Line Period 9" Boxer Briefs 3-Pack
Rainbow X=
Regular price$114.00 Sale price$96.90
First Line Period 9" Boxer Briefs 3 +1
First Line Period 4.5" Trunks 3-Pack - Rainbow X=
First Line Period 4.5" Trunks 3-Pack
Rainbow X=
Regular price$102.00 Sale price$86.70
First Line Period 4.5" Trunks 3
First Line Period Boy Shorts 3-Pack - Rainbow X=
First Line Period Boy Shorts 3-Pack
Rainbow X=
Regular price$87.00 Sale price$73.95
First Line Period Boy Shorts 3 +1
First Line Period Bikini 3-Pack - Rainbow X=
First Line Period Bikini 3-Pack
Rainbow X=
Regular price$78.00 Sale price$66.30
First Line Period Bikini 3 +1
First Line Period 9" Boxer Briefs 3-Pack - Plum
First Line Period 9" Boxer Briefs 3-Pack
Plum
Regular price$114.00 Sale price$96.90
First Line Period 9" Boxer Briefs 3 +2
First Line Period 4.5" Trunks 3-Pack - Plum
First Line Period 4.5" Trunks 3-Pack
Plum
Regular price$102.00 Sale price$86.70
First Line Period 4.5" Trunks 3 +1
First Line Period Boy Shorts 3-Pack - Plum
First Line Period Boy Shorts 3-Pack
Plum
Regular price$87.00 Sale price$73.95
First Line Period Boy Shorts 3 +2
First Line Period Bikini 3-Pack - Plum
First Line Period Bikini 3-Pack
Plum
Regular price$78.00 Sale price$66.30
First Line Period Bikini 3 +2
First Line Period 9" Boxer Briefs - Plum
First Line Period 9" Boxer Briefs
Plum
Sale price$38.00
First Line Period 9" Boxer Briefs +4
First Line Period 4.5" Trunks - Plum
First Line Period 4.5" Trunks
Plum
Sale price$34.00
First Line Period 4.5" Trunks +2
First Line Period Boy Shorts - Plum
First Line Period Boy Shorts
Plum
Sale price$29.00
First Line Period Boy Shorts +4
First Line Period Bikini - Plum
First Line Period Bikini
Plum
Sale price$26.00
First Line Period Bikini +4
First Line Period 9" Boxer Briefs - Rainbow X=
First Line Period 9" Boxer Briefs
Rainbow X=
Sale price$38.00
First Line Period 9" Boxer Briefs +4
First Line Period 4.5" Trunks - Rainbow X=
First Line Period 4.5" Trunks
Rainbow X=
Sale price$34.00
First Line Period 4.5" Trunks +2
First Line Period Boy Shorts - Rainbow X=
First Line Period Boy Shorts
Rainbow X=
Sale price$29.00
First Line Period Boy Shorts +4
First Line Period Bikini - Rainbow X=
First Line Period Bikini
Rainbow X=
Sale price$26.00
First Line Period Bikini +4
First Line Period 9" Boxer Briefs - Black Cherry Heather
First Line Period 9" Boxer Briefs
Black Cherry Heather
Sale price$38.00
First Line Period 9" Boxer Briefs +4
First Line Period Boy Shorts - Black Cherry Heather
First Line Period Boy Shorts
Black Cherry Heather
Sale price$29.00
First Line Period Boy Shorts +4
First Line Period Bikini - Black Cherry Heather
First Line Period Bikini
Black Cherry Heather
Sale price$26.00
First Line Period Bikini +4
First Line Period 9" Boxer Briefs 3-Pack - Future Dusk
First Line Period 9" Boxer Briefs 3-Pack
Future Dusk
Regular price$114.00 Sale price$96.90
First Line Period 9" Boxer Briefs 3 +2
First Line Period Boy Shorts 3-Pack - Future Dusk
First Line Period Boy Shorts 3-Pack
Future Dusk
Regular price$87.00 Sale price$73.95
First Line Period Boy Shorts 3 +2
First Line Period Bikini 3-Pack - Future Dusk
First Line Period Bikini 3-Pack
Future Dusk
Regular price$78.00 Sale price$66.30
First Line Period Bikini 3 +2
First Line Period 9" Boxer Briefs - Future Dusk
First Line Period 9" Boxer Briefs
Future Dusk
Sale price$38.00
First Line Period 9" Boxer Briefs +4
First Line Period Boy Shorts - Future Dusk
First Line Period Boy Shorts
Future Dusk
Sale price$29.00
First Line Period Boy Shorts +4
First Line Period Bikini - Future Dusk
First Line Period Bikini
Future Dusk
Sale price$26.00
First Line Period Bikini +4
First Line Period 9" Boxer Briefs 3-Pack - Black Rainbow Logo
First Line Period 9" Boxer Briefs 3-Pack
Black Rainbow Logo
Regular price$114.00 Sale price$96.90
First Line Period 9" Boxer Briefs 3 +2
First Line Period 4.5" Trunks 3-Pack - Black Rainbow Logo
First Line Period 4.5" Trunks 3-Pack
Black Rainbow Logo
Regular price$102.00 Sale price$86.70
First Line Period 4.5" Trunks 3 +1
First Line Period Boy Shorts 3-Pack - Black Rainbow Logo
First Line Period Boy Shorts 3-Pack
Black Rainbow Logo
Regular price$87.00 Sale price$73.95
First Line Period Boy Shorts 3 +2
First Line Period Bikini 3-Pack - Black Rainbow Logo
First Line Period Bikini 3-Pack
Black Rainbow Logo
Regular price$78.00 Sale price$66.30
First Line Period Bikini 3 +2
First Line Period 9" Boxer Briefs - Black Rainbow Logo
First Line Period 9" Boxer Briefs
Black Rainbow Logo
Sale price$38.00
First Line Period 9" Boxer Briefs +4
First Line Period 4.5" Trunks - Black Rainbow Logo
First Line Period 4.5" Trunks
Black Rainbow Logo
Sale price$34.00
First Line Period 4.5" Trunks +2
First Line Period Boy Shorts - Black Rainbow Logo
First Line Period Boy Shorts
Black Rainbow Logo
Sale price$29.00
First Line Period Boy Shorts +4
First Line Period Bikini - Black Rainbow Logo
First Line Period Bikini
Black Rainbow Logo
Sale price$26.00
First Line Period Bikini +4
First Line Period Boy Shorts 3-Pack - Black X= Rainbow
First Line Period Boy Shorts 3-Pack
Black X= Rainbow
Regular price$87.00 Sale price$73.95
First Line Period Boy Shorts 3 +2
First Line Period Bikini 3-Pack - Black X= Rainbow
First Line Period Bikini 3-Pack
Black X= Rainbow
Regular price$78.00 Sale price$66.30
First Line Period Bikini 3 +2
First Line Period 9" Boxer Briefs 3-Pack - Black X= Rainbow
First Line Period 9" Boxer Briefs 3-Pack
Black X= Rainbow
Regular price$114.00 Sale price$96.90
First Line Period 9" Boxer Briefs 3 +2
First Line Period 4.5" Trunks 3-Pack - Black X= Rainbow
First Line Period 4.5" Trunks 3-Pack
Black X= Rainbow
Regular price$102.00 Sale price$86.70
First Line Period 4.5" Trunks 3 +1
First Line Period Bikini 3-Pack - X= Black
First Line Period Bikini 3-Pack
X= Black
Regular price$78.00 Sale price$66.30
First Line Period Bikini 3 +2
First Line Period 9" Boxer Briefs 3-Pack - X= Black
First Line Period 9" Boxer Briefs 3-Pack
X= Black
Regular price$114.00 Sale price$96.90
First Line Period 9" Boxer Briefs 3 +2
First Line Period Boy Shorts 3-Pack - X= Black
First Line Period Boy Shorts 3-Pack
X= Black
Regular price$87.00 Sale price$73.95
First Line Period Boy Shorts 3 +2
First Line Period 9" Boxer Briefs - Black X= Rainbow
First Line Period 9" Boxer Briefs
Black X= Rainbow
Sale price$38.00
First Line Period 9" Boxer Briefs +4
First Line Period 4.5" Trunks - Black X= Rainbow
First Line Period 4.5" Trunks
Black X= Rainbow
Sale price$34.00
First Line Period 4.5" Trunks +2
First Line Period Boy Shorts - Black X= Rainbow
First Line Period Boy Shorts
Black X= Rainbow
Sale price$29.00
First Line Period Boy Shorts +4
First Line Period Bikini - Black X= Rainbow
First Line Period Bikini
Black X= Rainbow
Sale price$26.00
First Line Period Bikini +4
First Line Period 4.5" Trunks 3-Pack - X= Black
First Line Period 4.5" Trunks 3-Pack
X= Black
Regular price$102.00 Sale price$86.70
First Line Period 4.5" Trunks 3 +1
First Line Period 9" Boxer Briefs - X= Black
First Line Period 9" Boxer Briefs
X= Black
Sale price$38.00
First Line Period 9" Boxer Briefs +4
First Line Period 4.5" Trunks - X= Black
First Line Period 4.5" Trunks
X= Black
Sale price$34.00
First Line Period 4.5" Trunks +2
First Line Period Bikini - X= Black
First Line Period Bikini
X= Black
Sale price$26.00
First Line Period Bikini +4
First Line Period Boy Shorts - X= Black
First Line Period Boy Shorts
X= Black
Sale price$29.00
First Line Period Boy Shorts +4

Queer Founded & Run

Fit-Tested on Real Bodies

B-Corp Certified