Custom Sieve Packs

You know what you want. Create your own packs, save $ on Sieve.

Custom Sieve Packs

You know what you want. Create your own packs, save $ on Sieve.
(alternate view)

Sieve Cutout Bra Custom 2-Pack

Size Chart

Non-Wire Bra Sizing

Your underbust: A B C D DD DDD G
24-26" 30 0 0 0 1 1* 1+
26-28" 32 0 0 1 2 2* 1+ 1+
28-30" 34 1 1 2 2 3* 2+ 2+
30-32" 36 1 2 3 3 4* 3+ 3+
32-34" 38 3 3 4 4 5* 4+ 4+
35-38" 40 3 5 5 5 5* 5+ 5+
38-40" 42 5 5 5 5*

* Non-wire bra sizing can vary by preference and if you're toward the top of a size range and prefer more coverage, you may want to size up. For styles available in + sizes (designed with additional support details for our larger cup customers), we find DD's can be on the cusp - if you prefer more coverage and support, we suggest the + bra equivalent for your band size.

Btw, the size nomenclature has changed for Bra Tops. Here's the conversion:
XS=0, S=1, M=2, L=3, XL=4, XXL=5

Q’s about sizing or fit? Email us at hello@negativeunderwear.com

 Sieve Cutout Bra Custom 2-Pack $119
(alternate view)

Sieve Thong Custom 2-Pack

Size Chart

Underwear Sizing

Dress size: 0-2 2-4 6-8 10-12 12-14 16-18
Your full hip: 34.5-36" 36.5-38" 38.5-40.5" 41-42.5" 43-44.5" 45-46.5"
Negative size: XS S M L XL XXL

Q’s about sizing or fit? Email us at hello@negativeunderwear.com

 Sieve Thong Custom 2-Pack $54
(alternate view)

Sieve Non-Wire Bra Custom 2-Pack

Size Chart

Non-Wire Bra Sizing

Your underbust: A B C D DD DDD G
24-26" 30 0 0 0 1 1* 1+
26-28" 32 0 0 1 2 2* 1+ 1+
28-30" 34 1 1 2 2 3* 2+ 2+
30-32" 36 1 2 3 3 4* 3+ 3+
32-34" 38 3 3 4 4 5* 4+ 4+
35-38" 40 3 5 5 5 5* 5+ 5+
38-40" 42 5 5 5 5*

* Non-wire bra sizing can vary by preference and if you're toward the top of a size range and prefer more coverage, you may want to size up. For styles available in + sizes (designed with additional support details for our larger cup customers), we find DD's can be on the cusp - if you prefer more coverage and support, we suggest the + bra equivalent for your band size.

Btw, the size nomenclature has changed for Bra Tops. Here's the conversion:
XS=0, S=1, M=2, L=3, XL=4, XXL=5

Q’s about sizing or fit? Email us at hello@negativeunderwear.com

 Sieve Non-Wire Bra Custom 2-Pack $119
(alternate view)

Sieve Brief Custom 2-Pack

Size Chart

Underwear Sizing

Dress size: 0-2 2-4 6-8 10-12 12-14 16-18
Your full hip: 34.5-36" 36.5-38" 38.5-40.5" 41-42.5" 43-44.5" 45-46.5"
Negative size: XS S M L XL XXL

Q’s about sizing or fit? Email us at hello@negativeunderwear.com

 Sieve Brief Custom 2-Pack $60
(alternate view)

Sieve Triangle Bra Custom 2-Pack

Size Chart

Non-Wire Bra Sizing

Your underbust: A B C D DD DDD G
24-26" 30 0 0 0 1 1* 1+
26-28" 32 0 0 1 2 2* 1+ 1+
28-30" 34 1 1 2 2 3* 2+ 2+
30-32" 36 1 2 3 3 4* 3+ 3+
32-34" 38 3 3 4 4 5* 4+ 4+
35-38" 40 3 5 5 5 5* 5+ 5+
38-40" 42 5 5 5 5*

* Non-wire bra sizing can vary by preference and if you're toward the top of a size range and prefer more coverage, you may want to size up. For styles available in + sizes (designed with additional support details for our larger cup customers), we find DD's can be on the cusp - if you prefer more coverage and support, we suggest the + bra equivalent for your band size.

Btw, the size nomenclature has changed for Bra Tops. Here's the conversion:
XS=0, S=1, M=2, L=3, XL=4, XXL=5

Q’s about sizing or fit? Email us at hello@negativeunderwear.com

 Sieve Triangle Bra Custom 2-Pack $119
(alternate view)

Sieve High-Waist Brief Custom 2-Pack

Size Chart

Underwear Sizing

Dress size: 0-2 2-4 6-8 10-12 12-14 16-18
Your full hip: 34.5-36" 36.5-38" 38.5-40.5" 41-42.5" 43-44.5" 45-46.5"
Negative size: XS S M L XL XXL

Q’s about sizing or fit? Email us at hello@negativeunderwear.com

 Sieve High-Waist Brief Custom 2-Pack $77
(alternate view)

Sieve Bra Top Custom 2-Pack

Size Chart

Non-Wire Bra Sizing

Your underbust: A B C D DD DDD G
24-26" 30 0 0 0 1 1* 1+
26-28" 32 0 0 1 2 2* 1+ 1+
28-30" 34 1 1 2 2 3* 2+ 2+
30-32" 36 1 2 3 3 4* 3+ 3+
32-34" 38 3 3 4 4 5* 4+ 4+
35-38" 40 3 5 5 5 5* 5+ 5+
38-40" 42 5 5 5 5*

* Non-wire bra sizing can vary by preference and if you're toward the top of a size range and prefer more coverage, you may want to size up. For styles available in + sizes (designed with additional support details for our larger cup customers), we find DD's can be on the cusp - if you prefer more coverage and support, we suggest the + bra equivalent for your band size.

Btw, the size nomenclature has changed for Bra Tops. Here's the conversion:
XS=0, S=1, M=2, L=3, XL=4, XXL=5

Q’s about sizing or fit? Email us at hello@negativeunderwear.com

 Sieve Bra Top Custom 2-Pack $111